321 Hand Operated Stool
- Controls: pneumatic hand lever
- Base: black composite
- Backrest: ergonomic
324 Hand Operated Stool
- Controls: pneumatic hand lever
- Base: chrome
- Backrest: curved body support
327 Foot Operated Stool
- Controls: pneumatic foot ring
- Base: chrome
- Backrest: curved body support
325 Foot Operated Stool
- Controls: pneumatic foot ring
- Base: chrome
- Backrest: curved body support
328 Foot Operated Stool
- Controls: manual hydraulic foot pump
- Base: dark gray metal
- Backrest: none
329 Foot Operated Stool
- Controls: manual hydraulic foot pump
- Base: dark gray metal
- Backrest: ergonomic
330 Foot Operated Stool
- Controls: manual hydraulic foot pump
- Base: dark gray metal
- Backrest: curved body support
331 Foot Operated Stool
- Controls: manual hydraulic foot pump
- Base: dark gray metal
- Backrest: ergonomic back w/twin arms