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Office Master Ergonomic OM5 Task Chair

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  • OM5 Series-Inescapable Comfort01:06
  • OM5 Series-True Comfort01:15
  • Office Master OM5 Interview With Francisco Romero05:01

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    The search for the perfect ergonomically efficient chair is over with the introduction of the Ergonomic OM5 Task Chair by Office Master.

    Its "body-activated" motion feature means that you can find that sitting sweet spot without all of the usual complex underseat knobs and levers.

    The ultra supportive PolyFlex back is there for your lumbar needs, making sure you don't strain your back even during the most strenuous work day.


    • Flexible back resistance responds to user's body positions
    • Promotes healthy movement and lower back support
    • "Body-activated" motion intuitively balances your body with the chair's recline
    • PolyFlex back grants firm or soft support depending on your unique needs
    • Front edge waterflex seat with variable flex technology adjusts to user's thigh length
    • Available in your pick of arms and casters
    • 12 year limited warranty


    Width 27"
    Height 37 - 42"
    Back 18" W x 21" H
    Seat 19.75" W x (17 - 18 1/2" D) x (16" - 21" H)
    Weight capacity 250 lbs
    Warranty 12 year limited

    Disclaimer: Office Master products have a 25% cancellation or restocking fee for returned or canceled orders.


    Frame Color

    Office Master Ergonomic OM5 Task Chair has two available frame styles; Modern Black or Palladium Grey. Both are made from the same durable plastics with Palladium Grey adding a lighter, more vibrant option.



    Office Master Ergonomic OM5 Task Chair is available with or without arms. We recommend adding the standard arms.


    PolyFlex Back Color

    The Office Master Ergonomic OM5 Task Chair has three available options to color your PolyFlex back: Modern Black, Palladium Grey, or Arctic White. All three options are compatible with all frame styles


    Back Fabric

    The Office Master OM5 Task Chair has the option of using just the PolyFlex back, or covering it with mesh or fabric.


    Seat Fabric

    Choose from a wide variety of fabric to cover your Office Master OM5 Task Chair.


    Seat Height

    The standard cylinder will likely provide the correct seat height for more workspaces, but the Office Master OM5 Task Chair does provide several cylinder options for varying heights and colors to match whichever configuration you assemble.

    5'' Cylinder Black or Chrome
    8'' Cylinder Chrome


    In addition to the various cylinder options, the OM5 offers several base colors to customize your chair: black, polished aluminum, or fixed height chrome. The fixed height chrome base is compatible with the 8'' chrome cylinder only.



    The OM5 Task chair has four different caster/glide options for different flooring situations. Whether you're on carpet, hard floors, our would like a more stationary solution, the OM5 chair will be able to suit your needs. The choices are: soft casters, glides, rubber casters for hard floors or reverse braking casters,


    Memory Foam

    The OM5 Task chair now offers a Memory Foam sub-layer for additional support. The pad would be under the seat fabric and act as a seat topper.

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    Warranty Information

    This product comes standard with a 12-year limited warranty.

    Return Information

    • Return windows close 30 days after you receive your item.
    • You are responsible for obtaining a Return Merchandise Authorization, the cost of shipping, and potential restocking fees, if the item has been opened.
    • To start a return, or to view the full returns policy, click here.
    Your Cost $497.90 List Price: $668.00
    Ships Free (US48)
    Ships in 5 business days

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    Bulk Deals

    In many cases, we can offer bulk quantity discounts for purchases or smaller orders made over an extended period of time. Bulk deals are based on anticipated volume and the products you've selected. We can also provide you with brochures and swatches to assist in your purchasing decisions.

    If you would like to request a quote, we can be reached via phone (800-531-3746), email (, or live chat from 8am - 7pm Monday - Friday and from 10am - 6pm Saturday.

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