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OM Seating  |  SKU: EV77

Office Master Electrostatic Discharge ESD High Back Ergonomic Chair (Vinyl) | EV77

$681.20


The Office Master EV77 Electrostatic Discharge ESD High-Back Ergonomic Chair is designed for electronics-focused workstations where static protection matters and long hours demand solid ergonomic support. With full adjustability and a durable build, it helps you stay focused and comfortable during extended tasks.

Highlights

  • ESD protection with fabrics made from 99% nylon and 1% carbon fiber for reliable static control
  • High-back ergonomic design that supports the upper body during long work sessions
  • Seat height adjustable from 17" to 22" to fit a range of desks and user heights
  • Multi-function mechanism for customizable comfort and support
  • Weight rating up to 300 lbs for a stable, durable seating option
  • Upholstery options include 2 ESD vinyl colors or 7 ESD fabric colors
  • ESD version of the popular Office Master 7770 chair, tailored to meet specialized ESD seating requirements
  • Task chair design ideal for focused work environments where both comfort and static protection matter

Shipping & Returns

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Dimensions

Model/Sku Office Master EV77
Overall Width 27"
Overall Height 39-48"
Back 18"w x 21"h
Seat 20"w x 17.5"-20.6"d
Seat Height 17-22"
Chair measurements are approximate and are based on switching cylinder heights on otherwise the same chair, with the same base and casters. Arm dimensions are approximate as actual measurements will vary depending on a variety of factors: cushion contour(s), seat upholstery, memory foam, etc.

Downloads

Warranty

Office Master, Inc. (OM) warrants to the original purchaser that its products are free from defects in materials and workmanship for the applicable warranty period, as indicated below. 

Should any item fail, OM will – at its sole discretion – repair or replace, with a comparable product or part, any item found to be defective as a result of normal commercial use (i.e., a single 8-hour shift, 5 days per week).

This warranty does not apply to items subjected to abuse, misuse, neglect, alteration, or damage caused by shipment, storage, accident, fire, flood, or act of God.

Note: the actual warranty terms are specified on the chair product page. 

lifetime limited warranty:

The OM5 Series® (including the OM5 Active sub-series), Truly.® Series, and Ginny are covered by a lifetime limited warranty on all structural components as defined below.

12-year limited warranty:

Unless otherwise specified, all models not classified as budget or 24/7 or heavy-duty are covered under a 12-year limited warranty on all structural components as defined below.

7-year limited warranty:

Unless otherwise specified, all models classified as budget or 24/7 or heavy-duty or bariatric are covered under a 7-year limited warranty on all structural components as defined below. Budget series include: BC, SG, ST, and WS. Bariatric series includes: GY4B-26 and GY4B-30.

warranty terms:

Within a given model’s applicable warranty period, all structural components, including gas cylinders, wood, metal and plastic parts (i.e., chair frames, bases and control handles) are guaranteed against structural failure when under normal commercial use. All OM seating comes with a default 275 lbs. weight capacity limit unless otherwise specified by OM. 

For all models, consumable items (i.e., casters, glides, etc.) are covered by a 5-year normal commercial use warranty.

fabrics and foam:

OM in-stock upholstery & foam cushions are covered by a 5-year normal commercial use warranty. Normal wear and tear on fabrics such as wrinkling, dirt accumulation or gathering is not covered. This includes Truly.® Series “Jackets” and “Wraps”. Natural, minor variations may exist in color, surface, grain or texture of upholstery materials. As a result, any such variations are not warranted. COM/COL and graded-in fabrics are not covered.

warranty labor:

This warranty exclusively covers the repair or replacement of OM parts as determined by OM and does NOT cover any portion of field labor or service and does NOT cover any portion of field labor or service. For information regarding OM’s non-warranty shop time and related charges, please reference a current copy of OM’s pricebook, in the Terms and Conditions section.