Office Chair Mechanism Model S4400 — Tilt with Seat Slider (Black)

Introduction

The Office Chair Mechanism Model S4400 is a modular tilt system with an integrated seat slider, designed for refurbishing or building ergonomic chairs. It’s compatible with standard chair frames and pairs well with the S4139 back upright, finished in black for a cohesive look.

Features

• Seat and Back Tilt Mechanism with Seat Slider provides independent tilt control alongside adjustable seat depth.
• Accepts standard tapered lift to fit most common gas cylinders used in office chairs.
• Control levers — one lever for gas cylinder activation, plus separate levers for seat tilt, forward tilt, and back tilt activation; a rear lever governs seat slider activation.
• Color and compatibility — black finish designed to integrate with existing chair aesthetics and compatible with S4139 back upright components.
• Engineering reference — product drawing is provided in millimeters (mm) for precise installation and alignment (conversion: 1 inch = 25.4 mm).

Benefits

Enhance seating ergonomics with precise control over height, tilt, and seat depth, helping users maintain a healthy posture during long workdays. The separate tilt levers allow quick adjustments for different tasks—typing, reading, or collaborating—without sacrificing support. Designed for refurbishing projects or new chair builds, S4400 offers reliable compatibility with standard components and the S4139 back upright, making it easier to source matching parts and reduce downtime. Whether you’re updating an office fleet or assembling a customized workspace, this mechanism provides flexible, durable adjustment options in a compact, black package.