
· FREE SHIPPING
· LIFETIME WARRANTY
· PRICE MATCH GUARANTEE
· ITEM: #OSOSTW8904MBK.DOF
Multi-Function, Mid Back, Mesh Seat Ergonomic Task Chair
· Pneumatic Seat Height Adjustment (18-22"H) - Adjusts up and down seat height relative to the floor
· 360 Degree Swivel - Allows seat "rotation" in a full circle
· Back Lock - Allows user to select and lock a particular back angle
· Tilt Lock - Locks seat and back in an upright position
· Sliding Seat - Allows seat to move "forward and back" or to be locked in a desired position
· Back Height Adjustment - Allows user to "adjust back up and down" for proper position of lumbar
· Tilt Tension - Allows user to adjust "resistance" with which chair reclines or tilts
· Forward Seat Tilt - Allows user to "tilt seat forward" for optimum comfort while doing intensive forward-oriented tasks
· Adjustable Seat & Back - Places the "pivot point" directly above the base center and allows the user to lean back in a seated position
· High Performance Control - Includes "swivel/tilt with tension control, independently adjustable seat and back angle with infinite lock (any position) and forward pitch control"
· Height/Width Adjustable Arms - Allows user to "adjust arms up and down, or in and out" within a set range to accommodate a variety of tasks
· Breathable, cool mesh back with ergonomic design contours to the natural curvature of the user's spine
· Plush memory foam seat
· Dual-hooded casters
· Molded 5-star nylon base
· Weight rated for users up to 250.0 lbs
Ships ready for easy assembly.Brand: OfficeSource
Collection(s): CoolMesh Collection
Item #: OSTW8904MBK
Click here to view the manufacturer's warranty.
2025 Discount:
Compare At: $ 972.00
You Save: $ 492.05
Our Price: $ 479.95
Chair Dimensions and Weight:
· Overall Dimensions: 25.5"W x 24.5"D x 36-39"H
· Seat Dimensions: 21"W x 19"D x 18-22"H
· Weight Capacity: 250.0 lbs
· Product Weight: 50.63 lbs
· Product Number: 7754ASNS.MESH
· Product Carton Weight (Lbs): 66Call for Assembly, Delivery, and Installation
Ships Within: 1 week
Estimated Delivery Dates: 1-2 Weeks after order confirmation
Delivery Method: Truck Delivery
Free Shipping:
- Small Parcel Service - small package carrier
- Dock-to-Dock Shipping - small or large truck to commercial loading dock
Additional Residential Service:
- Liftgate + Appointment / Call Ahead +$90.00 - small or large truck with pneumatic lift gate service to lower pallet and/or boxes to ground level.
Delivery Method: Truck Delivery
Items that are too large and/or heavy for the small package carriers typically will be delivered by a carrier outfitted to handle larger packages. Truck delivery is designed for bulky items or customers with a loading dock. If you select this method and are a residential customer or do not have a dock/forklift we will contact you to confirm this method of shipping. If you are located at a residential address without a commercial loading dock please select Additional Residential Service to have a truck with a lift gate. This is an additional $90.00 fee and includes a call ahead prior to delivery.














