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OSP Designs Mid Back Space Flex Chair

(View all from OSP Designs)

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List Price: $125.00

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OSP Designs Mid Back Space Flex Chair


  • Stylish mesh back
  • Matching breathable mesh seat
  • One touch pneumatic seat height adjustment
  • Heavy duty nylon base with dual wheel carpet casters
  • SpaceFlex collection
  • Manufacturer provides 5 year limited warranty


  • Overall: 18" W x 22.5" D
  • Minimum Overall Height - Top to Bottom: 33.25"
  • Maximum Overall Height - Top to Bottom: 38"
  • Overall Product Weight: 22.5lbs

OSP Designs Mid Back Space Flex Chair

Weights & Dimensions

  • Overall: 18" W x 22.5" D
  • Seat: 18" W x 17.25" D
  • Seat thickness: 2"
  • Minimum Overall Height - Top to Bottom: 33.25"
  • Maximum Overall Height - Top to Bottom: 38"
  • Chair Back Max Height: 16.25"
  • Chair Back Width: 15.75"
  • Overall Product Weight: 22.5lbs


Product Type: Task chairsStyle: Modern
Base Finish: 1: GreenBase Finish: 2: Orange
Base Finish: 3: PinkBase Finish: 4: Purple
Base Material: MetalExterior Seat Material: Mesh
Mechanism: PneumaticSwivel: Yes
Back Height: Mid-backAdjustable Height: Yes
Casters: Yes
  • Double Wheel Casters: Yes
  • Compatible Flooring: Carpet
Heated Seat: No
Country of Manufacture: China 


Assembly Required: Yes 

About the Manufacturer

OSP manufactures attractive occasional furniture primarily for kitchen and home living. OSP is affiliated with the Office Star furniture group.


The Mid Back Space Flex Chair 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 Office Chairs in the Office Seating section of our site.

OSP Designs Mid Back Space Flex Chair


“Hi, what is the minimum and maximum seat height for this chair?” asked by Janie

"Hello Janie, the seat height range is 16.25" - 20.5"." Tyson from Wayfair


“Hi, what is the weight capacity of this chair?” asked by Therenz

"Hi Therenz, the weight capacity of this chair is 150 lbs." Renae from Wayfair

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

When you buy a OSP Designs Mid Back Space Flex Chair 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 OSP Designs Part #: EM39800 here. If you have any questions about your purchase or any other Office Chairs product for sale our customer service representatives are available to help.Whether you just want to buy a OSP Designs Mid Back Space Flex Chair or shop for your entire business, Wayfair Supply has everything you need.
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Customer Reviews

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Tell us what you think about the Mid Back Space Flex Chair. It will help us provide you with better products in the future and help your fellow Wayfair shoppers make better purchases.

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Average Overall Rating:
(based on 159 reviews)

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Great Chair

Sylvia from Destrehan, LA– Verified Buyer– Top 1000 Reviewer

The chair was purchased at an exceptional price because it was a return item. It was dusty/dirty but all the parts were there, including the instructions, so I cleaned it as I put it together. The green is bright but I knew that up front. The chair is durable and for the price, it is magnificent.

Was this helpful? Yes1 No0

Great colors for the kids

Jenn from Katy, TX– Verified Buyer

These chairs are perfect for my kids desks. You have to be heavy enough to use the raise & lower mechanisms but they are very fun. Seem sturdy even though I had trouble getting all of the screws to fit the back mount. I bought 2 chairs and got 3 of 4 screws into one and 2 of 4 into the other. Doesn't seem to effect the sturdiness but time will tell. Good chair for the money. Very bright colors.

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Mid Back Space Flex Chair

Anita from Forestville, MD– Verified Buyer

This pink Mid Back Space Flex Chair is the perfect chair for my computer space in my master bedroom. Its soft, smells new, flows with me and is flexible. A great buy for the dollar! All of my purchases from Wayfair have exceeded my expectations. I'm very happy with my purchases....I will be making more purchases.....Need a computer chair...buy this one....it comes in different colors but the pink was my choice. Anita

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Good chair!

Rebecca from Henderson, TN– Verified Buyer– Top 500 Reviewer

I have two of these chairs in my sewing room. They roll very easily and are comfortable. The height is easily adjustable.

Was this helpful? Yes2 No0

Great home office chair

Deborah from Coral Springs, FL– Verified Buyer

Got this as a gift for my adult daughter after she picked it out herself. She's had it for a couple years now and it's still like new. When she got it she said it was just as comfortable as she was hoping it would be. She spends up to a few hours on her computer at home per day and still loves the chair.

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Desk Chair

Lisa from Libertyville, IL– Verified Buyer

This chair is awesome! We bought it for our daughter's desk in her room. She loves that it is comfortable and that the color is so fun (we got the purple). Very easy to put together! I will definitely consider getting another one when she leaves for college!

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Great chair for great price!

Sheila from New Castle, PA– Verified Buyer

This chair was offered in a color (purple) that I was having a hard time finding in a chair that my teenage granddaughter would like. The color is great, the price was good and the quick delivery was a plus! Would highly recommend this chair and Wayfair!

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Comfy and stylish

Jolene from Noblesville, IN– Verified Buyer

Great price for chair. Very comfortable and looks great in my small home office.

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Rick from Las Vegas, NV– Verified Buyer

Just what I was looking for and a great price, made momma very happy.

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task chair

tammy from fennville, MI– Verified Buyer

this chair is awesome! easy assembly, comfortable- love it use it for computer room

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Mid Back Space Flex Chair is also sometimes listed under the following manufacturer numbers: EM39800-18, EM39800-261, EM39800-3, EM39800-512, EM39800-6