Office Master WS15 Ergonomic Sit-Stand Workstool

Please note: This chair is custom-made and non-returnable. All fabric colors shown on your computer screen are approximate, based on the resolution of your monitor and subject to variation from the actual color on physical chairs. For more accurate ideas of color tones, etc. please contact or call 888-456-ERGO to obtain a sample or fabric swatch.

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Product ID: 14188
  • A specialty work stool for standing desks
  • Designed to reduce stress on lower back from a prolonged standing position; recommended for users who would like to take short rests during a long standing position
  • Move easily from sitting to standing and leaning back
  • Seat tilts up to 20 degrees
  • Weight capacity: 250 lbs
  • Gliders are recommended for this stool. 
  • If casters are desired, Reverse braking casters are recommended by the manufacturer as they lock when you sit on the chair and minimize the possibility of the stool running away under the user, potentially causing an accident
  • For the upholstered version of WS15, please see WS15VS, which offers the comfort of WS15 and the upholstered seat of the CLVS stool
List Price: $259.00
You save $90.65
Our Price: $168.35
Shipping: $0.00 *
Usually ships in 5 to 7 business days
* applies to Contiguous United States

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).


Workstools shouldn't require so much attention that adjusting them becomes a job unto itself. Office Master`s low-maintenance, easy-to-clean and affordable workstools are the perfect solution for any workplace or specialty application. In particular, office master WS15 is a great choice because of its unique base and seat tilting feature which make the WS15 a perfect choice for sit/stand applications.

Please note that the WS15 stool is for indoor use only and chemical cleaning is not recommended. For longevity of the stool, avoid round the clock usage that is typical of shift work environments (multiple rotating/consecutive shifts).


Overall Width 23"
Overall Height 28.5" - 38.5"
Back N/A
Seat 15" W x 13" D
Seat Height 22" - 32"
Carton Weight 30 pounds
UPS Weight 33 pounds
Arms N/A
Weight Capacity 250 lbs
Warranty 7 years Limited


  • Pneumatic lift
  • Tilting seat
  • Unibody ring base
  • Glides
  • Optional 8" chrome cylinder available (approx. 19-27")

Option 1: Casters - Wheels

CAS0050-RB - "Reverse-braking casters" lock in place when the chair IS in use (5 per set).


GLD-R - "Glides" keeps the chair stationary at all times. (5 per set)


Option 2: Seat Height - Cylinders

  • 10" Cylinder (standard) - Approx (22" - 32")

  • 8" Chrome Cylinder - Approx (19" - 27")

Frequently Asked Questions

Question: What is the weight capacity for this stool? Answer: The weight capacity is 250lbs.
Question: Are there casters available to make this stool roll? Answer: Casters are not available for this stool as it is not safe or recommended.
Model WS15
Manufacturer Office Master Chairs
Part Number WS15
Overall Width 23"
Overall Height 28.5 - 38.5"
Back N/A
Seat 15" W x 13" D
Seat Height 22 - 32"
Carton Weight 30 lbs
UPS Weight 33 lbs
Arms N/A
Warranty 7 year limited
Weight Capacity 250 lbs

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Office Master WS15 Ergonomic Sit-Stand Workstool

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