MDK Intro IT250 Heavy Duty Office Chair
The MDK Intro IT250 delivers ergonomic support for users requiring a robust seating solution. Engineered with anatomical precision, this heavy duty office chair accommodates users up to 150KG with a large seat design and reinforced construction. The high back provides comprehensive spinal support, while the ratchet back height adjustment allows precise positioning to match individual body dimensions.
The inflatable lumbar support system, positioned 250mm from the bottom of the back, enables customized lower back support to maintain proper posture throughout extended sitting periods. The heavy duty 3-lever mechanism provides independent control over seat height (460-590mm), seat angle, and back angle, allowing users to fine-tune their seating position. The adjustable body tension control adapts the chair's resistance to individual weight and movement preferences.
The 50mm seat slide mechanism extends the effective seat depth from 470mm to 520mm, accommodating different leg lengths and ensuring proper thigh support. The double curved posture waterfall seat design reduces pressure on the back of the thighs, promoting healthy circulation. Ergo-density foam maintains its supportive properties over time, providing consistent comfort across the 530mm seat width.
Optional arm configurations include Multi-Function Arms (AMF), Height & Depth Adjustable Arms (AA2D), and Height & Foldaway Arms (AF), allowing customization based on task requirements. The standard base can be upgraded to a Polished Base (AB) for enhanced aesthetics.

IT250 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: 470-520mm
- Back Height: 560-640mm
- Back Width: 480mm