301 (seat shell)

Office Chair Replacement Base: When and Why to Replace It An office chair replacement base is usually the first part to fail on a heavily used task chair, since the five-point base and its casters absorb constant rollin...

Sinking Seat Height Almost Always Means the Gas Cylinder Has Failed If a chair slowly drops under weight even after the height lever has been released, the pneumatic seal inside the gas cylinder has lost its ability to...

What Makes a Nylon Chair Base Different A nylon chair base is the five-star or four-star pedestal assembly that supports the seat of an office or task chair, typically injection-moulded from glass-filled polyamide (PA6 ...

Plastic Backrest vs. Plastic Back Frame: Understanding the Distinction A plastic backrest refers to the complete back assembly of a chair — the finished surface that contacts the sitter's spine, lumbar region, and shoul...