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Big and tall chairs at SitBetter

Boss - Ergonomic Kneeling Chair with Black Metal Frame

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Boss - Ergonomic Kneeling Chair with Black Metal Frame

The Boss B248 is a traditional ergonomic kneeling chair with Black Fabric and a Black Metal Frame.


Ships In: 5-7 Business Days
MSRP: $170.00


The Boss B248 Ergonomic Kneeling Chair (or Kneeling Stool) offers excellent ergonomic support and ease of use. The adjustable knee height allows for multiple size users and the ergonomic design eases the hip forward and encourages an upright posture by aligning the back, shoulders and neck to relieve strain on lumbar muscles.

Available in Black Stained Metal Frame and Black Fabric, comes standard with double wheel casters for carpet. Optional Hardwood Floor Casters Available.

Additional Information

Manufacturer Boss
  • Adjustable Knee Height
  • Black Fabric Knee and Seat Platforms
  • Solid Black Stained Wood Frame
Product Video No
Supplier No
Lead Time 5-7 Business Days
Assembly Required Yes
Arms N/A
Meets or Exceeds ANSI/BIFMA Standards Yes
Overall Dimensions 19.5"W x 20" - 25" H x 26"D
Seat Dimensions 16.5"W x 13"D
Sit Duration 8
Weight Capacity 250 lbs

Customer Reviews

Terrible Knee Board Foam Review by
I am 5'6" and weigh 122 lbs. I purchased this chair in December and Assembled it in January. It's May and the foam in the knee rest is completely worn away. The screws holding the board in place are easily felt through the foam and are creating black and blue marks on my shins. The need to use more substantive foam and place a cover over the screws. (Posted on 5/11/2014)
Should have gotten one years ago! Review by
I really wish I had gotten one years ago, for in the preschool classroom, I was either sitting on chairs that were too small for any adult, or on the floor. This has made such a nice difference! (Posted on 5/11/2014)

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Boss Office Products is a reliable manufacturer of value oriented office seating. They specialize in manufacturing low price, good quality office chairs for the budget consumer. Their portfolio of products ranges from leather office chairs to ergonomic chairs, all within the budget price range.

Our opinion: We like Boss. They make good stuff at a good price. A solid budget chair line, especially their leather office chairs. Good budget priced values.


NORSTAR Office Products wants you to be happy with our products. When used and maintained properly, they will provide you with years of satisfaction.

NORSTAR chairs are warranted against manufacturing defects in material and workmanship for six years from the ORIGINAL DATE OF RETAIL PURCHASE with the following exceptions: Upholstery materials, foam, gas cylinders, wood components, control mechanisms and electronic components. Upholstery materials and foam are warranted against unusual wear or deterioration and gas cylinders, wood components, and controls against structural failure or unusual wear for EIGHTEEN months. All electronic components for the massaging units have a 90-day warranty period.

The warranty obligation is limited to the replacement or repair, at NORSTAR OFFICE PRODUCTS option, of defective parts and components. The warranty of this product is null and void if the product is subject to negligence, abuse, misuse, accident, or if the customer does not perform the necessary maintenance outline below. The warranty is only rated for the original purchaser of the product and will not be honored if the product is resold. All warranties are for normal usage defined as a forty hour work week by persons weighing two hundred fifty pounds or less. The model B205 is limited to one hundred fifty pounds. Specific limitations are available upon request.

Should any component be found to be defective under normal single shift usage (eight hours a day), that component will be replaced free of charge. In order to get the replacement part, please return the product or part to the dealer from whom it was purchased. The dealer will send the defective part to the manufacturer, freight prepaid. The manufacturer will repair or replace the defective parts and return it to the dealer, freight prepaid. Customers must be responsible for maintenance of this product including assembly, cleaning, and making sure all hardware is securely fastened.

This warranty applies only to the product; the manufacturer is not responsible in any way for loss, inconvenience or any other special or consequential damages caused by any product defect. This warranty is the only warranty applicable on all Norstar products. All other warranties, expressed or implied prior, are disclaimed.