Office Master AF415 Cushioned Back Stool, 20" Adjustable Foot Ring

AF415 is custom-made and non-returnable. All fabric colors shown on your computer screen are approximate depending on resolution of your monitor.

Product ID 18889

NOTE: All chair/arm animations shown are approximate representations; your actual chair/arm may vary significantly in features and appearance. The above video demonstrates general adjustment capabilities which vary depending on the model of the chair. The actual functions & appearance of your chair/arm may differ significantly from the video & illustration shown above. For a list of actual capabilities, please see the features list below or call and ask one of our knowledgeable customer service representatives at 1-888-456-3746. (Some options are available as an upgrade option and must be selected at time of purchase).


Office Master AF415 is a Cushioned Back Stool shown with 20" Adjustable Foot ring and KR-21 Arm. Affirm has multiple styles & functions to offer. Various mesh color choices, different types of controls, plus complementary Stools, Guest and Nesting chairs.

Sitting Pretty - Pay enough attention, and it’s easy to see good work. Affirm’s cushioned backrest models are well-made complements to the primary Affirm mesh line. Padded comfort for workers who simply prefer more.

Take Charge - Confidence comes with knowing you’ve made the right call. Affirm is loaded with multiple choices to let everyone know exactly how cool, calm & comfortable you are.

Meet & Greet - Actually. Don’t just meet and greet - meet and "Great"! Stand out with Affirm’s customizable knit jacket choices. Find the look that proclaims your office is the original home of great ideas.

Let's Collaborate - Sit how your momma told you not to, toss your legs off to the side, or squirm from spot to spot - be unconventional, and why not? With Affirm’s enlarged "sweet spot" providing a broad comfort zone, unbridled genius is just one brainstorm away.


Overall Width 27"
Overall Height 47.25" - 60.25"
Back 18.5" W x 21" H
Seat 19" W x 17.5-20.6" D
Seat Height 25.5" - 35.5"
COM 1 yard
Carton Weight 58 pounds
UPS Weight 101 pounds
Arms Groups AR, 1 and 4
Weight Capacity 300 lbs
Warranty 12 years Limited


  • Stool function high back
  • Turn-lock footring
  • Pneumatic lift
  • Easy back height adjustment
  • Infinitely locking back tilt
  • Cushioned backrest
  • Seat depth adjustment
  • Carpet casters

Product Options/Accessories

Frequently Asked Questions

q Does this stool swivel and rock?

Yes, the AF415 stool is able to swivel. However, none of our stools allow for rocking because that can be a safety hazard and can cause for the stool, and the user, to tip over.

Model AF415
Manufacturer Office Master Chairs
Part Number AF415
Overall Width 27"
Overall Height 47.25-60.25"
Back 18.5" W x 21" H
Seat 19" W x 17.5-20.6" D
Seat Height 25.5-35.5"
COM 1 yard
Carton Weight 58 lbs
UPS Weight 101 lbs
Arms Groups AR, 1, and 4
Warranty 12 year limited
Weight Capacity 300 lbs

Customer reviews

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  • 5 stars 1
(5 out of 1)
Very happy

by Khadijah H, Southern California, Jan 29, 2018

I am very satisfied with the drafting stool. I really like the plethora of options available for it, and all the different color options. The high seat height is perfect for a good stand up height drafting table. (Those Varidesks are EXPENSIVE). The seat is soft and comfortable, and the lumbar support is good. What would I want different? Actually, 2 things. First, an adjustable lumbar support, and second, an option for a larger foot ring would be nice. I really like the caster options. My office has a tile floor (SO much easier to clean spills) so having different options was a really good thing. I even saw an option for foot pads (no casters) which I think would be a GREAT option if you wanted a chair that didn't roll around. I also liked that the armrests are removable.

Would I buy another one in the future? Yes, I think so.

Limited 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.

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 are covered under a 7-year limited warranty on all structural components as defined below. Budget series include: BC, SG, ST, and WS.

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.

Claims Procedure - Should any item fail, contact the Dealer from whom it was purchased. A photograph of the damage(s)/issue(s) and of the “born-on” label underneath the seat will be required to help OM determine the cause and extent of any issues. If it is determined that a return is necessary, return that item and its product proof of purchase to the Dealer, whereupon that Dealer will send both to OM, freight prepaid. OM will repair or replace the defective part at its sole discretion and return it to the Dealer, freight prepaid. Please email related photos and details for any warranty claims to [email protected].

Returns - Written authorization from OM is required prior to a Dealer returning any failed or defective parts to OM. Any returned defective part(s) will NOT be accepted without this prior written authorization, or a “Returned Materials Authorization” (RMA) # assigned to it.

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.