---
title: "5-Leg Pneumatic Stool with Backrest"
date_modified: "2026-09-21T09:23:34-04:00"
---

               

Model #2155-21

##### 5-Leg Pneumatic Stool with Backrest

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Model #2155-21

#### 5-Leg Pneumatic Stool with Backrest

- Premium, 23" die cast, aluminum base with satin finish top
- 5-leg design for greater stability
- Full size diameter top and base for comfort and stability
- Comfortable backrest
- 4" thick seat for extra comfort
- Black hooded, dual wheel, nylon casters
- Pneumatic height adjustment
- All seats have 3/4" thick solid plywood base
- Lever controls height
- Knock-down design saves on shipping
- Easy, no-tools required assembly
- Premium, stain-resistant, woven, knit-backed vinyl upholstery
- 250 lbs. load capacity under normal use

Shipping info:

Weight: 23 lbs.  
Box Dimensions: 22"x23"x15"

[Download Data Sheet](https://cf.clinton-ind.com/doc/Specs/2155-21-Seating-2026.pdf) 

- [Imperial](javaScript:;)
- [Metric](javaScript:;)

2155-21 5-Leg Pneumatic Stool with Backrest   Seat Diameter   Base Diameter   Height Range      2155-21 16" 23" 19" - 24"   2155-21 41 cm 57 cm 48 cm – 61 cm    

###### 22 Optional Foot Ring - Premier Series

• Height adjustable, chrome ring with black hub

**Note:** Must be ordered with Extra-Tall Cylinder so foot ring can be fitted onto stool

###### 23 Optional Glides A

• Black nylon

###### 25 Optional Soft Roll Casters

• Smooth, quiet operation

###### 26 Extra Tall Pneumatic Cylinder

• Adds 4.5" to low height and 7.5" to travel height

###### 27 Scuff Protectors

Plastic tips protect base (black only)

###### 28 Twin, Soft Wheel, Hooded Caster w/ Auto-Lock Occupied

• 2” (50mm) wheel diameter  
• 7/16” x 7/8” (11x22mm) wire grip ring stem  
• Locks when seat is occupied  
• Soft tread for hard floors  
• Black

###### 28SET Twin, Soft Wheel, Hooded Caster w/ Auto-Lock Occupied

• 2” (50mm) wheel diameter  
• 7/16” x 7/8” (11x22mm) wire grip ring stem  
• Locks when seat is occupied  
• Soft tread for hard floors  
• Black  
• Set of 5

###### 38 Twin, Soft Wheel, Hooded Caster w/ Auto-Lock Unoccupied

• 2” (50mm) wheel diameter  
• 7/16” x 7/8” (11x22mm) wire grip ring stem  
• Locks when seat is unoccupied  
• Soft tread for hard floors  
• Black

###### 38SET Twin, Soft Wheel, Hooded Caster w/ Auto-Lock Unoccupied

• 2” (50mm) wheel diameter  
• 7/16” x 7/8” (11x22mm) wire grip ring stem  
• Locks when seat is unoccupied  
• Soft tread for hard floors  
• Black  
• Set of 5

##### Related Products

###### 5-Leg Pneumatic Stool with Backrest

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###### 5-Leg Pneumatic Stool

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###### 5-Leg Pneumatic Stool

Model #2155

[View](https://www.clinton-ind.com/product/2155-5-leg-pneumatic-stool?siteToken=f9e2d77a50050538553aa4e22ee965a3f9a44f9d402e32e6981c07ba11aa306e1) 

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