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Boss Office Products Mid-Back Ergonomic Task Chair without Arms

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Boss Office Products Mid-Back Ergonomic Task Chair without Arms


  • Contoured back and seat provides support and helps relieve back-strain
  • Extra large seat and back cushions
  • Pneumatic gas lift seat height adjustment
  • Weight capacity: 250 lbs
  • Chair does have some lean to the back support

Product Details:

  • Product Type: Task chairs
  • Style: Contemporary
  • Base Material: Plastic
  • Upholstered: Yes
  • Mechanism: Pneumatic
  • Swivel: Yes
  • Ergonomic: Yes
  • Armed: Yes


  • Overall: 25" W x 25" D
  • Minimum Overall Height - Top to Bottom: 37"
  • Maximum Overall Height - Top to Bottom: 40"
  • Overall Product Weight: 30lbs

Boss Office Products Mid-Back Ergonomic Task Chair without Arms

Weights & Dimensions


  • Armrests Min Height: 24"
  • Armrests Max Height: 32"

Additional Weights & Dimensions

  • Overall: 25" W x 25" D
  • Seat: 20" H x 18" W x 20" D
  • Base: 25" W x 25" D
  • Seat back 14"wide
  • Minimum Overall Height - Top to Bottom: 37"
  • Maximum Overall Height - Top to Bottom: 40"
  • Overall Product Weight: 30lbs


Product Type: Task chairsStyle: Contemporary
Base Material: PlasticExterior Seat Material: Fabric; Vinyl
Upholstered: Yes
  • Cushion or Upholstery Fill Material: Foam
Mechanism: Pneumatic
Swivel: YesBack Height: Mid-back
Back Type: UpholsteredHeadrest Included: No
Footrest Included: NoBig and Tall: No
Twenty-Four Hour Chair: NoAdjustable Height: Yes
Ergonomic: YesTilt Control: No
Lumbar Support: YesLife Stage: Adult
Casters: Yes
  • Hooded Casters: Yes
  • Double Wheel Casters: Yes
  • Compatible Flooring: Carpet; Hardwood
Heated Seat: No
Heated Back: NoLeg Type: Five-point rolling
Armed: Yes
  • Arm Type: T-bar
  • Arm Finish: Black
  • Armrest Material: Plastic
Adjustable Arms: Yes
  • Arm Adjustment Type: Height
Weight Capacity: 250Commercial Use: Yes
Eco-Friendly: YesProduct Care: Wipe clean with a damp cloth
Country of Manufacture: China 


Assembly Required: YesTools Needed: Screwdriver
Additional Parts Required: No 


Product Warranty: 6 year limited 


ANSI BIFMA Compliant: YesGSA Approved: No
Greenguard Certified: No 

About the Manufacturer

Boss Office Products – a division of Norstar, has always been a major company in the office furniture industry. With headquarters in California and a branch in Atlanta, Boss Office Products has a strong foothold in office products across the nation. The company specializes in the design and manufacturing of all types of office seating products. Some of their most successful products include executive chairs upholstered in various materials, as well as task seating. Ergonomics plays a big role in the development of Boss Office Products and will bring the company into the future with new and improved ways to make office seating comfortable and affordable.


The Mid-Back Ergonomic Task Chair without Arms is a Contemporary style product. Contemporary style bridges the gap between traditional and modern. Pieces feature simple and clean lines with smooth surfaces without any carving or adornment. You can shop for more Contemporary Office Chairs in the Office Seating section of our site.

Boss Office Products Mid-Back Ergonomic Task Chair without Arms

Questions & Answers (1)


“Hi, what is the adjustable height range of the seat?” asked by Karen

"Hi Karen, the adjustable height of the seat ranges from 17"-22"." Kevin from Wayfair

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

When you buy a Boss Office Products Mid-Back Ergonomic Task Chair without Arms 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 Boss Office Products Part #: B9090-XX 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 Boss Office Products Mid-Back Ergonomic Task Chair without Arms 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 Ergonomic Task Chair without Arms. 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 16 reviews)

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Perfect for the home office

from Fort Madison, IA – Verified Buyer

This chair has been so nice after having used a lesser quality task chair. My back is supported by the back and it does not suddenly begin to lose height. Lifesaver for a work from home Mom.

Was this helpful? Yes1 No0

Fine chair!

from SC – Verified Buyer

This office chair worked out just fine for me! Had no problems or issues getting it, it's been holding up pretty well for me and I've been very happy with the decision. No complaints here.

Was this helpful? Yes0 No0

Excellent Buy!!

from Belleville, NJ – Verified Buyer

Took me a little time to put it together but so glad I was able to . . . it's a really nice chair - comfortable and an excellent buy!

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Wouldn't trade!

from Fort Worth, Texas – Verified Buyer

I wouldn't trade this chair for a free top of the line chair! I have one at the office and one at my home office. I work 10-14 hour days, and NEVER have any back pain or discomfort. Four hours of sitting in a sub-par chair and my back was killing me. If I had the space I'd order a few extra to hoarde.

Was this helpful? Yes2 No0

Love It

from Pike Road, AL – Verified Buyer

Now I'm not mechanically inclined or a genius but. for me to put this chair together by myself...ooh la la..simple easy instructions..Nice chair well made good quality chair....

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Great chair

from Michigan

There was one piece that was broken when the chair arrived. We were able to get the part replaced quickly with Wayfair and now it is a great chair.

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Comfortable chair!

from Pen Argyl, PA – Verified Buyer

You can't beat this chair for price or comfort! It was a bit of a challenge to put together by myself, but with my husband's help at the end we got it!

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Great chair

from Hendersonville, TN

This chair was so easy to put together. My 12 & 13 year old boys did it. I like the height adjustments. Only wish I would have gotten the arm rests.

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Great price!

from Phila Pa

Pruduct was as advertized.Great price and the shipping was fast. Easy to build and very comfrotable! We are using them in our music school for the teachers.

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Good task Chair!

from HOUSTON, TX – Verified Buyer

This is very good task chair. Seat is comfortable. Back is big enough. I suggest this chair if you look for a task chair. I got for 4.

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Mid-Back Ergonomic Task Chair without Arms is also sometimes listed under the following manufacturer numbers: B9090-BE, B9090-BK, B9090-BY, B9090-CS, B9090-GY, B9091-BE, B9091-BK, B9091-BY, B9091-CS, B9091-GY