Special Nonexistent Furniture
SKU #: KLL1971

Knoll ® Bertoia Diamond Chair with Full Cover

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Knoll ® Bertoia Diamond Chair with Full Cover

The graceful Diamond Chair is an astounding study in space, form and function by one of the master sculptors of the last century. Like Saarinen and Mies, Bertoia found sublime grace in an industrial material, elevating it beyond its normal utility into a work of art.


  • Bertoia collection
  • Four plastic guides included on sled base to protect floors
  • Frame is scratch, stain, and chip resistant
  • ''Designer of the Year,'' 1955, USA
  • Stainless steel connections
  • Full cover is stretched over wire frame and attached to seat basket with hooks
  • Certificate of Merit, American Institute of Architects
  • Greenguard certified
  • Apply a coat of hard paste wax to the rods to protect against moisture
  • Seat pad and cover attach directly to the frame with hidden mono-filament and metal hooks
  • Vinyl seat pad suitable for outdoor use
  • Knoll logo stamped into the back of the base
  • Made in USA

Product Details:

  • Chair Design: Lounge chair
  • Style: Modern


  • Upholstery Material: Vinyl

Legs Included

  • Leg Material: Metal


  • Overall: 30" H x 33.5" W x 28.25" D
  • Overall Product Weight: 16lbs

Knoll ® Bertoia Diamond Chair with Full Cover

Additional Documents

Greenguard certified

Weights & Dimensions

  • Overall: 30" H x 33.5" W x 28.25" D
  • Seat: 16.5" H
  • Overall Product Weight: 16lbs


Chair Design: Lounge chairUpholstered: Yes
  • Upholstery Material: Vinyl
  • Pattern: Solid
Frame Material: Metal
  • Frame Material Details: Stainless steel
Scratch Resistant: Yes
Stain Resistant: YesStyle: Modern
Arms Included: Yes
  • Arm Type: Flared arms
Legs Included: Yes
  • Leg Design: Sled
  • Leg Material: Metal
Outdoor Use: YesEco-Friendly: Yes
Country of Manufacture: United States 


Green Guard Certified: Yes 

About the Manufacturer

With a long history of design innovation for the home, workplace, and in textiles, Knoll continues to play a large part in the foundations of Modern Design. Founded in 1938 by Hans Knoll and continued after his death by his wife Florence Knoll, the company has produced a long line of award-winning and museum worthy designs from virtually every top designer in modern design.


The Bertoia Diamond Chair with Full Cover is a Modern style product. Modern style is very sleek with clean lines, and generally incorporates high gloss using whites, greys, and blacks. A focus on geometry and angular shapes is a hallmark of modern design. Glass and leather are also seen a lot with modern style. You can shop for more Modern Accent Chairs in the Reception section of our site.

Knoll ® Bertoia Diamond Chair with Full Cover

Questions & Answers (1)


“Hi, what is the seat height of this chair?” asked by Mala

"Hi Mala, the seat height of this chair is 16.5''." Devin from Wayfair

Still have questions about this product? We're here to help

When you buy a Knoll ® Bertoia Diamond Chair with Full Cover online from Wayfair Supply, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Knoll ® Part #: 421 here. If you have any questions about your purchase or any other Accent Chairs product for sale our customer service representatives are available to help.Whether you just want to buy a Knoll ® Bertoia Diamond Chair with Full Cover or shop for your entire business, Wayfair Supply has everything you need.
Note: This quality item is custom made for your order. Unfortunately, this means that we cannot accept returns once your order is shipped, so please call our trained staff with any questions you may have prior to ordering - we will ensure that you get exactly what you need.
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Bertoia Diamond Chair with Full Cover is also sometimes listed under the following manufacturer numbers: 421L-2-U-K162/3, 421L-2-U-K16212, 421L-2-U-K16220, 421L-2-U-K16222, 421L-2-U-K16228, 421L-2-U-K64214, 421L-2-U-K6426, 421L-2-U-K6427, 421L-2-U-K6428, 421L-C-U-K162/3, 421L-C-U-K16212, 421L-C-U-K16220, 421L-C-U-K16222, 421L-C-U-K16228, 421L-C-U-K64214, 421L-C-U-K6426, 421L-C-U-K6427, 421L-C-U-K6428