🔄

We're here to help! Chat with a representative for bulk quotes, inventory levels, and more!
OM Seating  |  SKU: AF528

Office Master Affirm Executive High Back Ergonomic Chair | AF528

$588.25

Office Master AF528 is an executive high-back ergonomic chair designed for professionals who value comfort and a contemporary look in the office or home workspace. Its frameless Night Fall Black mesh, polished aluminum accents, and adjustable features deliver reliable support through long workdays.

Highlights

  • Executive high-back chair with Night Fall Black mesh for breathable, supportive seating
  • Synchronous tilt mechanism creates a 2:1 back-to-seat ratio, allowing the back to move more than the seat for natural posture
  • Independent back tilt with 5-stage locking tilt and a side-mounted tension knob for personalized comfort
  • Pneumatic height lift with EZ back height adjustment to fit a range of desk heights and preferences
  • Seat depth adjustment to accommodate different leg lengths and seating styles
  • Frameless mesh back design promotes airflow and a sleek, modern silhouette
  • JR-69 arms paired with a standard polished aluminum package for durable support and a premium look
  • Dual-color universal soft casters provide smooth mobility and floor protection
  • Suitable for executive offices, conference rooms, and home workspaces across tech, healthcare, education, and design environments

Shipping & Returns

We make ordering office furniture easy and risk-free:

  • Shipping is always FREE on all orders within the contiguous United States, with No minimum purchase necessary! Read Policy
  • Need to make a return?
    We offer a clear and straightforward process. Read Policy

Dimensions

Model/Sku Office Master AF528
Overall Width 27"
Overall Height 41.5-49"
Back 21"w x 24"h
Seat 20.5"w x 17.5-20"d
Seat Height 17-22"
Carton Weight 58 pounds
Warranty 12 year limited
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.

More information about AF528 Fabric and Arms selection is available on the AF528 Options Library page

Downloads

Assembly: Assembly_Instructions_Affirm-Series-1.pdf
Brochure: Brochure_Affirm_Series.pdf
Certificate: Certificate_Affirm_Series.pdf
Disassembly: Disassembly_Recycling_Instructions_Affirm-Series-1.pdf
Sales: Sales_Tutorial_Affirm.pdf

General Warranty

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.

  • Quality support

    Expert help & advice

  • Check your order status

    Updates & tracking

  • Secure payments

    Your payment information is processed securely