Office Master PT74 PT Value Line Ergonomic Multi Function Chair

  • PT74 is custom-made and non-returnable. All fabric colors shown on your computer screen are approximate depending on resolution of your monitor. 
Product ID 483


  • Ergonomic multi- function task chair 
  • Warranty: 12-year on all structural components: 5 years on fabrics & foam
  • 4" of vertical back height adjustment
  • Seat slider and seat height adjustment
  • Adjustable lumbar support 
  • Weight capacity: 300 lbs
  • Arms not included and sold separately
  • Please see, if you want a larger chairsmaller chair

NOTE: 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 PT74 comes from the PT Value Line and is a reliable chair that was built to meet the demands of daily cross-performance use. With a full complement of features that affords users the ability to adjust the chair to their comfort, each of the chairs from the PT value line offers a compelling combination of comfort, style and affordability. PT Value Series designed to accommodate users up to 300 pounds

Note: Arms sold separately, unless otherwise indicated.


Overall Width 27"
Overall Height 35 - 44"
Back 17" W x 18" H
Seat 20" W x 17-20.1" D
Seat Height 17 - 22"
COM 1 yard
Carton Weight 53 pounds
UPS Weight 101 pounds
Arms Groups 1 and 4
Weight Capacity 300 lbs
Warranty 12 years Limited


  • Pneumatic lift
  • Tilting backrest
  • Easy back height adjustment
  • Rocking tilt
  • Seat tilting
  • Seat depth adjustment
  • Adjustable lumbar
  • Forward tilting
  • Tension knob

Product Options/Accessories

Model PT74
Manufacturer Office Master Chairs
Part Number PT74
Overall Width 27"
Overall Height 35 - 44"
Back 17" W x 18" H
Seat 20" W x 17"-20.1" D
Seat Height 17 - 22"
COM 1 yard
Carton Weight 53 lbs
UPS Weight 101 lbs
Arms Groups 1 & 4
Warranty 12 year limited
Weight Capacity 300 lbs

Customer reviews

  • 1 stars 0
  • 2 stars 0
  • 3 stars 0
  • 4 stars 1
  • 5 stars 2
(4.7 out of 3)
Great chair for my home office

by SC, San Francisco, California, Aug 01, 2022

This chair is wonderful for customizing the most ergonomic position possible. I was on the fence about the cylinder height because I am 5'3", but my desk was not low enough and I use a foot rest. The company I work at purchased the chair, but I wish I added padded arm rests or upgraded the fabric. The fabric selected was Grade 2: SoftSit 2570 Graphene. It's nice and soft, but my pet's hair weaves into it and doesn't come off after using a lint roller and vacuum. It shipped quickly and was easy to setup. This chair made me realize how uncomfortable my cute office chair was and has relieved a lot of pain from bad posture.

This chair has made all the difference, I am so comfortable now

by Nichole Reyes, Emeryville, California, Nov 04, 2021

So happy with this new chair, it has been a couple of weeks now and I am still very comfortable. I used to suffer from lower back pain from sitting on my previous chair and now those pains have gone away. I feel very well supported, the chair has so many different configurations and I was able to get it to fit just right. Plus its very cushiony

Fantastic Customer service

by Robert Patterson, Marysville, California, Jun 04, 2021

I have the PT74 at work. I sit all day and there is only one in the whole emergency room. I seek this chair out when I work. I took a picture of the build under the seat and built what I thought was the same exact chair and purchased it. I received the chair and it was so uncomfortable. I unfortunately built it incorrectly as I misunderstood one of the build codes. ErgoDirect reached out to me and after discussion I realized I put the DCS - 2 Layers of Foam: Memory Foam and Support Foam on Seat, which made my home seat way uncomfortable. My work seat does not have the DCS so ErgoDirect is sending me a new seat without the DCS!! THAT is great customer service. Thank you ErgoDirect!

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.