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Basic differences between reflecting and refracting telescopes

When looking at telescopes, and in particular astronomical telescopes one of the most important thing a beginner will want to know is whether they should buy a reflecting telescope or a refracting telescope.

Often this is personal choice but it helps at least to know the difference so in this article we will look at the very basic differences between the two types. At the least, you will know what a dealer or a web site is talking about when they mention the two types.

A reflecting telescope uses a system of internal mirrors to reflect and angle the image coming into the scope thereby effectively increasing the telescope's length. You view the image from the side of the scope which seems rather odd to some people but this is an easy way to spot a reflecting telescope. The aperture (in this case, the width) of the scope is the basic measure of how much light will get into it and how large the main (or objective) mirror is and the simple rule of thumb here is, the bigger the better! The actual magnification of these scopes is adjusted by the eyepiece you use when viewing the final image.

Refracting telescopes are based on the traditional eye glass design, at the simplistic level there is nothing majorly complicated happening here; the light comes in one end and is magnified by the lenses and you view it through the viewfinder end. Often there will be a 90 degree mirror at the end to make viewing easier and many people prefer this to the viewing position of the reflecting telescope. Other than that there is no real change from the original design that Galileo created. Because of the lack of any obstruction in the mirror path the image from a cheaper refracting scope will usually have a higher contrast than an equivalent reflector.

Reflecting telescopes do need their mirrors aligned on a regular basis whereas refractors are permanently aligned which means they are pretty much "ready to go" whenever you need one.

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Telescope $5.99 Telescope

Celestron Travel Scope 70 Telescope $191.42 The Travel Scope 70 from Celestron is made of high quality materials to ensure stability and durability. Featuring a compact and portable design with ample optical performance, the travel scope is ideal for terrestrial and casual astronomical observation.Brand: CelestronModel: 21035Dimensions: 14 inches high x 17 inches wide x 28 inches deepMagnification: 40xAperture: 70mmWeight: 8 poundsIncludes The Sky X First Light Edition CD-ROMAll coated glass optical elements for clear, crisp imagesErect image diagonal so that your views are correctly orientedIncludes travel bag

Pirate Telescope $2.98 Scope Out the Seven Seas! Whether searching for your buried treasure or just sailing the seven seas, this stylish Pirate Telescope is the accessory you need. 13" long when fully extended. 6 3/4" long collapsed. Made of durable plastic. Our unique costume accessories are just what you're looking for. We have the accessories for your costume that people will notice and admire. Spook up your outfit with the Pirate costume accessories you need! Part of Holidays > Halloween > Costumes > Accessories

Carson SkySeeker Refractor Telescope $56.99 CARSON JC-1000 SKYSEEKER™ REFRACTOR TELESCOPE? Precision 60mm optics ? 40x?100x power range ? 5 x 24mm finder scope for easy zero-in on subject ? Includes deluxe aluminum tripod

I Cube Astronomical Telescope $32.95 Seeing Stars! Young stargazers will enjoy a wonderful introduction to astronomy with I-Cube Astronomical Telescope! This compact, high-tech 30mm scope with 60X/90X/120X power has a fine eyepiece with focus adjustments for clear images, a 3x Barlow lens for increased magnification, and a detachable, collapsible tabletop tripod for viewing stability. 20" long. Ages 8+.

Anchormaster 20-60x60 Telescope $1422.88 Look at the stars through this amazingly designed telescope. This telescope is functional and beautiful with brass and mahogany wooden accents.20-60X60 Anchormaster Spyscope Big, light-gathering 60 mm objective lensFully coated achromatic lenses for brilliant images structured in a refractor designPowerful 20-60x zoom magnificationInternal image-correcting lens provides right-side-up images for the naked eyeEasy-to-use helical focusing ringsElaborately detailed and polished brass constructionBrass cradle mounts allows the scope to move smoothly in all directionsHandcrafted mahogany tripod with expendable legs and polished brass stabilizing chain

National Geographic 60MM/700MM 525X Land and Sky Telescope $222.08 This classic altazimuth refractor telescope from National Geographic is a great starter scope for the serious novice astronomer. This telescope delivers sharp views and excellent performance as both an astronomical and terrestrial telescope.60MM multi-coated achromatic objective lensColor correcting viewsAstonomical and terrestrial telescopeIncludes a height adjustable, aluminum tripod with accessory trayAges 8 and up

Danubia Pluto Refractor Astro Telescope. $36.99 The Dorr Pluto is the ideal starter telescope, including an adjustable aluminum tripod and an accessories tray.It also includes a 2 x finder scope, two eyepieces, a 2xbarlow lens and a 90 degree diagonal mirror.Boasting a 48-200x magnification which can be expanded using a range of accessories truly makes this telescope the benchmark to begin a new hobby.200 x magnification.200 x optimum magnification.Includes tripod.EAN/Barcode 4000461038792.Free delivery by post.

Starwatcher 70060 Refractor Telescope $221.5 The journey to stars and planets begin with BARSKA. BARSKA’s Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finders cope, eyepieces, mount and tripod. Each Starwatcher telescope also includes our new Beginner’s version of the highly popular Deepsky Astronomy Software. It’s packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on to your PC and begin your journey to the stars and planets.FEATURES:231x Max Power with 60 mm Objective lensEquatorial Mount with setting circles and dual slow moving adjustment cablesInterchangeable eyepieces with a 3x Barlow lens to increase viewing powerRefractor optical systemIncludes tripod and carrying caseSPECIFICATIONS:Max power: 231xFocal Length (mm) 700Finder scope 5x20Draw Tube (inch): 1.25Eyepiece #1: k9,Eyepiece #2: k25Diagonal: N/A

Starwatcher 900114 Reflector Telescope $328.65 The journey to stars and planets begin with BARSKA. BARSKA’s Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finders cope, eyepieces, mount and tripod. Each Starwatcher telescope also includes our new Beginner’s version of the highly popular Deepsky Astronomy Software. It’s packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on to your PC and begin your journey to the stars and planets. Backed by the manufacturer's Limited Lifetime WarrantyFEATURES:675x Max Power with 114 mm Objective lensEquatorial Mount with setting circles and dual slow moving adjustment cablesInterchangeable eyepieces with a 3x Barlow lens to increase viewing powerReflector optical systemIncludes tripod and carrying casePRODUCT SPECIFICATIONS:Max power: 675xFocal Length (mm) 900Finder scope: RED DOTDraw Tube (inch): 1.25Eyepiece #1 :SR4Eyepiece #2: K20Diagonal: No

Starwatcher 40080 Refractor Telescope $292.9 The journey to stars and planets begin with BARSKA. BARSKA’s Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finders cope, eyepieces, mount and tripod. Each Starwatcher telescope also includes our new Beginner’s version of the highly popular Deepsky Astronomy Software. It’s packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on to your PC and begin your journey to the stars and planets.FEATURES:133x Max Power with 80 mm Objective lensRotating Eyepiece allows for many different viewing positions.Interchangeable eyepieces with a 3x Barlow lens to increase viewing powerRefractor optical systemIncludes tripod and carrying caseSPECIFICATIONS:Max power: 133xFocal Length (mm) 400Finder scope 5x20Draw Tube (inch): 1.25Eyepiece #1: k9,Eyepiece #2: k25Diagonal: N/A

Starwatcher 90060 Refractor Telescope $271.5 The journey to stars and planets begin with BARSKA. BARSKA’s Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finders cope, eyepieces, mount and tripod. Each Starwatcher telescope also includes our new Beginner’s version of the highly popular Deepsky Astronomy Software. It’s packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on to your PC and begin your journey to the stars and planets. Backed by the manufacturer's Limited Lifetime WarrantyFEATURES:675x Max Power with 60 mm Objective lensEquatorial Mount with setting circles and dual slow moving adjustment cablesInterchangeable eyepieces with a 3x Barlow lens to increase viewing powerReflector optical systemIncludes tripod and carrying casePRODUCT SPECIFICATIONS:Max power: 675xFocal Length (mm) 900Finder scope: RED DOTDraw Tube (inch): 1.25Eyepiece #1: SR4Eyepiece #2: H12Eyepiece #3: H20Diagonal: No.

Starwatcher 60050 Refractor Telescope $103.65 The journey to stars and planets begin with BARSKA. BARSKA’s Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finders cope, eyepieces, mount and tripod. Each Starwatcher telescope also includes our new Beginner’s version of the highly popular Deepsky Astronomy Software. It’s packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on to your PC and begin your journey to the stars and planets. Backed by the manufacturer's Limited Lifetime WarrantyFEATURES:450x Max Power with 50mm Objective lensMount Pan-head tripodInterchangeable eyepieces with a 3x Barlow lens to increase viewing powerRefractor optical systemIncludes tripod and carrying casePRODUCT SPECIFICATIONS:Max power: 450xFocal Length (mm) 600Finder scope: 5x24Draw Tube (inch): 0.965Eyepiece #1: SR4Eyepiece #2: H20Diagonal:90°.

40070 REFRACTOR 300x TELESCOPE $69.99 Specifications: * Model: 40070 * Solid refractor telescope * 300x power and 400mm focal length * Glass coated optics for enhanced image brightness * Interchangeable eyepieces with a 3x Barlow lens to increase viewing power * Engineered with smooth functioning mounts * Sturdy adjustable table top tripod * Excellent for astronomy enthusiasts and professionals * Includes Barska’s Deepsky Astronomy Software * Includes soft carrying case * Includes Barska’s Limited Lifetime Warranty Specifications: Model: AE10100. Optical System: Refractor. Max Power: 400mm. Focal Length: 400mm. Objective Lens: 70mm. Finder Scope: 5x24. Barlow Lens: 3x. Diagonal: 45 degree. Features: The journey to stars and planets begins with BARSKA. BARSKA's Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finderscope, eyepieces, mount and tripod. Also includes our new Beginner's version of the highly popular Deepsky Astronomy Software. It's packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including, nebulae, star clusters, double stars, variable stars, and other types. Simply ...

Celestron 21035 TravelScope 70 Telescope $100.98 This telescope was designed with traveling in mind while offering exceptional value. The Travel Scope is made of the highest quality materials to ensure stability and durability. All this adds up to a telescope that gives you a lifetime of pleasure with a minimal amount of maintenance. Featuring a compact and portable design with ample optical performance the Travel Scope is ideal for terrestrial as well as casual astronomical observation. Features:. Includes The Sky X First Light Edition CDROM. All coated glass optical elements for clear crisp images. Erect image diagonal so that your views are correctly oriented. Smooth functioning altazimuth mount with easy pointing to located objects. Preassembled aluminum full size photographic tripod ensures a stable platform. Quick and easy notool set up. The telescope and tripod fit inside the custom backpack for easy traveling and storage

Danubia Merkur 60A Refractor Astro Telescope. $102.99 The Danubia Merkur 60A Telescope is ideal for people who are looking for a good all round telescope with a large focal length.Includes an adjustable aluminium tripod, 5x24 finder scope, three eyepieces, a 2x Barlow lens and a diagonal mirror, a moon filter and an erecting eyepiece.Its 45-454x magnification can be expanded using a range of accessories, truly making this telescope the benchmark for amateur stargazers.Moon filter.Maximum magnification 454x.EAN/Barcode 4000461019593.Free delivery by post.

Danubia Orion 200 Newton Reflector Astro Telescope. $533.99 The Danubia Orion 200 Newton Reflector Astro Telescope is a powerful 200mm mirror telescope, offering phenomenal images of the night sky.It has a high focal ratio of 1:5 and is fitted with the heavy EQ-5 equatorial mount.This mirror telescope comes complete with a 9x50 finder eye scope, three Plossl eyepieces and an achromatic Barlow 2x lens.Moon filter.Maximum magnification 238x.Includes an aluminium tripod.EAN/Barcode 4000461014963.Free delivery by post.

Danubia Wega 900 Refractor Astro Telescope. $132.99 The Danubia Wega 900 Telescope is ideal for people who are looking for a good all round telescope with a large focal length.Includes an adjustable aluminium tripod, 6x24 finder scope, two eyepieces, a 2x Barlow lens, a diagonal mirror, a moon filter and an erecting eyepiece.Boasting a 72-300x magnification which can be expanded using a range of accessories truly makes this telescope the benchmark for amateur stargazers.Moon filter.Maximum magnification 300x.EAN/Barcode 4000461038587.Free delivery by post.

Celestron CPC 800 480x2032 Telescope $1999.99 The CPC 800 GPS XLT is the most portable of Celestron's top-of-the-line fork-mounted astronomical telescopes and includes Celestron's premium StarBright XLT coatings. This telescope is at home as a superb visual instrument or with optional wedge and CCD cameras, as a serious astrophotographer's tool. Turn this scope to planets and see amazing detail on the surface of Jupiter; see Cassini's Division in the rings of Saturn, and resolve details on the surface of Mars. Even the distant Uranus, Neptune and Pluto are within your reach. Although large in aperture, with its conveniently located carrying handles and an instrument weight of only 42 lbs, this telescope is portable enough to setup in your backyard or take with you to your favorite dark sky location.

Emerson 50x100mm Refractor Telescope with Tripod $64.4 The Emerson 50x100mm Refractor Telescope with Tripod is a great companion for star tracking and astronomical viewing. This sleek telescope includes interchangeable 50x and 100x eyepiece lenses and an adjustable 4-foot tripod.Optic quickly assembles with no tools required3x finder scope to locate objects fasterLight-weight, durable aluminum constructionMirrored diagonal eyepiece for easy viewingComes with protective lens capDimensions: 38 inches high x 28.5 inches long x 3.5 inches wide

Emerson 50X/100X Telescope with Tripod $39.99 View objects up to 100 times closer than the naked eye. Product features: Interchangeable 50X and 100X eyepiece lenses; 3X Finder Scope to locate objects faster; lightweight and durable construction, full-sized adjustable tripod, mirrored diagonal eyepiece for easy viewing, protective lens cap, quick screw-type assembly with no tools required. Great for star tracking and astronomical viewing. Locking tripod legs fully expand to stand up to 4-feet high. 360° degree rotating pan head lets you navigate the night sky. *Do not view the sun directly with this telescope as it can cause serious eye damage. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3 years.

6 Handheld Brass Telescope w/ Wooden Box - Pirate Navigation $14.95 This telescope is made from brass and comes with a leather handle. The telescope will magnify far away objects and landscapes with a clear image. The scope extends to a full 6" and can retract to fit into its own ornate box.The telescope is modeled after older style scopes. It can be focused by fully extending the entire body of the telescope, then slowly contracting and expanding the eyepiece portion only.The magnification is approximately 3x. Type: Telescope

15 Handheld Brass Telescope with Leather Case - Nautical Collector $28.95 This high quality brass 15" telescope features a leather-wrapped handle. The scope extends to a full 15" and can retract to fit into its own handy carrying case.The telescope is modeled after older style scopes. It can be focused by fully extending the entire body of the telescope, then slowly contracting and expanding the eyepiece portion only.The magnification of this brass telescope is 12x. Type: Telescope

Amateur Telescope Making in the Internet Age $34.95 Building an astronomical telescope offers the amateur astronomer an exciting challenge, with the possibility of ending up with a far bigger and better telescope than could have been afforded otherwise. In the past, the starting point has always been the grinding and polishing of at least the primary mirror, a difficult and immensely time-consuming process. But now that the Internet has brought us together in a global village, purchasing off-the-shelf goods such as parabolic mirrors, eyepieces, lenses, and telescope tubes, is possible. There are also a vast number of used mirrors and lenses out there, and it is now possible to track them down almost anywhere in the world. Online stores and auction houses have facilitated commerce regarding all sorts of useful optical components at a reasonable price. This is a book about making telescopes from available parts. It provides guidance on where to look and what to look for in selecting items useful for telescope making and explains how to assemble these components to produce an excellent instrument on a tight budget. At one time, many amateurs made their own telescopes from home-made parts. In today's rushed world, that has almost become a lost art. The Internet offers a wonderful alternative to either buying a pricey scope fully assembled or making your own from scratch.

Starwatcher 600 power, 80060 Refractor Telescope $69.99 Features of Barska 675x900mm Starwatcher Refractor Telescope AE10752: Solid Refractor telescope All glass coated optics for enhanced image brightness Interchangeable eyepieces with a 3x Barlow lens to increase viewing power Red Dot finderscope to help aim at sky targets Engineered with smooth functioning mounts Sturdy adjustable aluminum tripod with accessory tray Ideal for celestial and terrestrial viewing Excellent for astronomy enthusiasts and professionals Package Contents: Barska 675x900mm Starwatcher Refractor Telescope AE10752 Star-Watch Astronomy Software Red-Dot Finder Scope

Starwatcher 525 power, 70060 Refractor Telescope $59.99 Solid Refractor Telescope Model Number: AE10750 Optical System: Refractor Max Power: 525 Focal Length (mm): 700mm Objective Lens (mm): 60mm Finder Scope: Red Dot Draw Tube (inch): 1.25 Erecting Eye: 1.5x Diagonal: 90

Orion GoScope 70 Backpack Refractor Telescope $169.95 Orion GoScope 70 Backpack Refractor Telescope This Ultra-Portable Scope For Folks On The Go Sports A New, Sturdier Tripod PLEASE NOTE: NO DISCOUNTS. NO RUSH SHIPPING OR INTERNATIONAL SHIPPING. UPS GROUND SHIPPING ONLY. SHIPPING WILL BE $20 Here's a versatile refractor telescope designed to pack up and go whenever you hit the road, the trail, or the air. It excels for daytime birding, nature study, and scenic long-distance viewing, and will take you way beyond the Earth's horizon after sunset for some casual nighttime stargazing and Moon-watching. The Orion GoScope 70 Backpack Refractor Telescope features a 70mm achromatic lens system for high-resolution images of distant subjects. The telescope sets up in seconds on the retractable aluminum tripod,newly upgraded to provide smoother motion and a wider, more stable stance. The three-way pan head allows smooth, easy pointing of the telescope. It comes with a correct-image prism diagonal, quality 20mm and 10mm Kellner telescope eyepieces (1.25"), and EZ Finder II red dot finder scope. It's a complete observational system that tucks away neatly in the specially designed backpack! Includes Starry Night Special Edition astronomy software. Weighs 6 lbs. Features: Ultraportable "day and night" telescope for folks on the go Includes telescope plus full-length aluminum tripod with retractable legs Rugged backpack holds the telescope, tripod and all accessories Includes EZ Finder II red dot finder scope and two eyepieces for low-and high-power views Also includes Starry Night stargazing CD-ROM

Danubia Atlas 2000 Newton Reflector Astro Telescope. $367.99 The Danubia Atlas 2000 Newton Reflector Astro Telescope offers a high focal ratio equatorial mount and a sturdy aluminium tripod.This mirror telescope comes complete with a 6x30 finder eye scope, three eyepieces and an achromatic Barlow 2x lens.It has a magnification of 30-238x which can be expanded further by optional eyepieces.Moon filter.Maximum magnification 384x.EAN/Barcode 4000461013898.Free delivery by post.

National Geographic Kids Power Telescope with Tripod $76.55 Full Size Refractor Telescope, rests on a Full Height, Adjustable Aluminum Tripod. Includes 3 Eyepieces and a 3X Barlow Lens Delivering magnification up to 375X. 90 Degree Diagonal Eyepiece provides Right Side Up Viewing and 6x25 Finder Scope Makes Aiming at Far away Objects Easy. 50MM Diameter Glass Lens and a 500MM Focal Length make and Impressive Family Telescope that can be enjoyed by users Of All Ages. Ages 8 and Up

Starwatcher 40070 Compact Refractor Telescope $142.9 The journey to stars and planets begin with BARSKA. BARSKA’s Starwatcher telescopes are ideal entry-level telescopes for the aspiring amateur astronomer. The refractor and reflector telescope models are easy to set up and include everything necessary to begin the adventure for a lifetime including telescope, finders cope, eyepieces, mount and tripod. Each Starwatcher telescope also includes our new Beginner’s version of the highly popular Deepsky Astronomy Software. It’s packed with many features that novice users as well as experienced users will appreciate and includes a searchable database of over 10,000+ objects including nebulae, star clusters, double stars, variable stars, and other types. Simply load it on to your PC and begin your journey to the stars and planets. Backed by the manufacturer's Limited Lifetime WarrantyFEATURES:300x Max Power with 70 mm Objective lensMount Pan-head tripodInterchangeable eyepieces with a 3x Barlow lens to increase viewing powerRefractor optical systemIncludes tripod and carrying casePRODUCT SPECIFICATIONS:Max power: 300xFocal Length (mm) 400Finder scope: 5x24Draw Tube (inch): 1.25Eyepiece #1 :SR4Eyepiece #2: K20Diagonal: 45°.

National Geographic Kid's 375X Telescope $180.45 This telescope from National Geographic is a perfect family telescope with the abilility to magnify up to 375X. This telescope also features a finder scope and a 500mm focal length to deliver sharp views and excellent performance.Includes three eyepieces and a 3X Barlow lensMagnification up to 375X50MM diameter glass lens6x25 finder scope makes aiming at far away objects easy90-degree diagonal eyepiece provides right-side-up viewingIncludes a height adjustable, aluminum tripod with accessory trayAges 8 and upSome assembly required

36 POWER TELESCOPE, 90080 BRASS REFRACTOR $1099.99 36 Power, 90080 Brass Refractor Telescope, Anchormaster w/ Mahogany Floor Tripod. Brass cradle mounts allows the scope to move smoothly in all directions, Handcrafted Mahogany tripods with extendable legs Features: What better way to gaze at the stars or your favorite scenic view than through a gorgeous anchormaster telescope. This scope features quality construction, high quality optics and is elaborately detailed in polished brass with mahogany finish tripod. Add a touch of elegance to any décor. - High quality Plössl interchangeable eyepieces with a rack and pinion focuser (Only one eyepiece included) - Equipped with 45° erecting diagonal for correct image of land viewing - Brass cradle mounts allows the scope to move smoothly in all directions - Handcrafted Mahogany tripods with extendable legs - Ideal for celestial viewing of planets or terrestrial viewing of the beautiful cityscape

Telescope in Black $90 Telescope in Black

Eye to the Telescope $4.99 Eye to the Telescope

Reflector 50-100x Telescope w/ Tripod $122.64 Never miss a thing with this incredible reflector telescope. This quality optic comes with its own tripod and features interchangeable lenses that go from 50-times to an astounding 100-times magnification.Reflector telescopeInterchangeable 50x and 100x lensesEyepiece lenses5X finder scope to locate objects fasterLightweight durable constructionFull-sized adjustable tripodMirrored diagonal eyepiece for easy viewingProtective lens capQuick screw-type assembly with no toolsGreat for star tracking and astronomical viewing360-degree pan headLocking tripod expands to 4 feet highInstruction manual comes in English and SpanishHeavy duty constructionModel: W5612Materials: PlasticColor: Silver/blackWeight: 2 pounds