MDK ErgoFix Intro Ergonomic Office Chair
The MDK ErgoFix Intro IT450 is a heavy duty ergonomic office chair designed for users requiring robust support and extensive adjustability. Built with a 3-lever mechanism and supporting up to 150KG, this chair delivers professional-grade comfort for extended work sessions.
Heavy Duty Construction
The ergoFIXIntro range features a heavy duty 3-lever mechanism that is infinitely lockable and highly adjustable. This robust mechanism comfortably supports users of up to 150KG and now comes with a 50mm seat slide as standard, allowing for optimal positioning regardless of body type.
Advanced Ergonomic Features
The upholstered high back includes ratchet back height adjustment (580-660mm) for precise positioning. Inflatable lumbar support positioned 250mm from the bottom of the back provides targeted lower back relief. Independent seat and back angle adjustment ensures personalized comfort, while adjustable body tension control adapts to your weight and preference.
Comfort-Focused Design
The large seat (530mm width, 470mm depth) features a double curved posture waterfall design that reduces pressure on the back of your thighs and promotes healthy circulation. Ergo-density foam provides supportive cushioning that maintains its shape over time. Seat height adjusts from 460-590mm to accommodate various desk heights.
Customization Options
Choose from multiple arm configurations: Multi-Function Arms (AMF), Height & Depth Adjustable Arms (AA2D), or Height & Foldaway Arms (AF). A Polished Base (AB) option is available for enhanced aesthetics.

IT450 Product Features
- Upholstered high back
- Ratchet back height adjustment
- Inflatable lumbar support (250mm from bottom of back)
- Large seat
- 50mm seat slide
- Heavy duty 3 lever mechanism
- Independent seat and back angle adjustment
- Adjustable body tension control
- Double curved posture waterfall seat
- Ergo-density foam
- 150KG weight limit
Chair Options
- Multi-Functions Arms (AMF)
- Height & Depth Adjustable Arms (AA2D)
- Polished Base (AB)
- Height & Foldaway Arms (AF)
Dimensions (mm)
- Seat Height: 460-590mm
- Seat Width: 530mm
- Seat Depth: 470mm
- Back Height: 580-660mm
- Back Width: 500mm