Immersion Multi-Function Ergonomic Chair with Ratchet Back


  • Contour molded seat and back with 3-1/2" thick padding, built-in lumbar support and ratchet back-height adjustment.
  • Multi-function control with adjustable tilt-tension, forward tilt, seat slider, and one-touch pneumatic seat height adjustment.
  • Arms with soft, durable PU pads are height and width-adjustable.
  • Dual-wheel carpet casters attached to the heavy-duty nylon, 5-prong base.
  • Green Features: This product has one or more features that are environmentally conscious.


  • Seat: 20"Wx20"Dx18" to 21-1/4"H; 3-1/2" Thick.
  • Back: 19"Wx19"H; 3-1/2" Thick.
  • Arms: 25-1/4" to 28-1/2"H from floor.
  • Overall: 29"Wx27-1/4"Dx41-3/4 to 45"H.

  • WARRANTY: This item has a limited 15 Year manufacturer's warranty. 15 Year on all non-moving metal parts; 5 Years on component parts including control mechanisms, pneumatic cylinders, wood, plastic parts, base and casters; 3 Years on upholstery fabric and foam against wear and deterioration; leather is not warranted against routine scratching and scuffing, as leather is subject to minor blemishes in use.

    Standard usage is defined as a standard forty hour work week by persons weighing 250 lbs. Or less (unless otherwise specified).


CAL TB117: California Technical Bulletin 117-75 effective since October of 1975 is a standard by which upholstered furniture is tested to be approved as meeting a minimum fire standard. This product meets that standard of fire safety.

ANSI/BIFMA: Product has been tested and meets the standards for safety, durability, and structural adequacy by the American National Standards Institute/Business Institute Furniture Manufacturers Association.


    Estimated delivery in 8 - 12 days.

  • Normally ships within 7 business days.
  • This item can ship via UPS, although larger quantities may ship via truck to save you money.
  • This item typically ships from Ontario, CA 91761.


  • Assembly Required: Ships in flat pack boxes for lower shipping costs. Tools may be needed and may require more than one person for set up.


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You're reviewing: Immersion Multi-Function Ergonomic Chair with Ratchet Back

Immersion Multi-Function Ergonomic Chair with Ratchet Back

Use this versatile Immersion Multi-Function Ergonomic Chair with Ratchet Back in a variety of workspaces. Its molded seat and back give comfortable 3-1/2" thick padding and support for the back, making it easier to sit for long periods on the job. Adjust the seat for comfort and ergonomics with the ratchet back-height adjustment and the multi-function control that adjusts the tilt, seat height and seat slider. Adjust the height and width of the padded arms as well. A five-prong base holds dual-wheel carpet casters to make the chair easy to move. Available in multiple fabric colors to fit the setting. Requires assembly to reduce shipping costs.
Item #: OSMB-891

Weight: 57 lbs

List Price: $450.00

Your price Qty You save
$239.00 1-4 47%
$231.00 4+ 49%
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