DUO™ 300SS High Back - Short Seat
DUO ™ 300SS – High Back / Short Seat
High-Back Dual Density Support — Shorter Seat Fit
The DUO™ 300SS combines the proven DUO™ Dual Density Posture Support Seat with a high backrest and a shorter seat depth designed to better suit smaller users or those requiring less thigh length.
The shorter seat allows the user to sit fully back into the chair while maintaining comfortable clearance behind the knees, helping the backrest and lumbar support function as intended.
DUO™ Dual Density Posture Support Seat.
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How the support works
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Sitting on the softer rear cushion allows the pelvis to settle gently towards the back of the seat, where it is held and supported between the firmer front cushion and the lower lumbar backrest as arrowed.
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These three elements work together to help locate and support the pelvis:
-
Softer rear cushioning allows the pelvis to settle into the rear seating area.
-
Firmer front cushioning helps define the pelvic seating position.
-
The lower lumbar backrest provides support behind the pelvis and lower back.
This relationship is intended to support the natural inward curve of the lower back and the spine’s overall S-shaped profile, helping the user find a supported alternative to a slumped, rounded sitting posture.
Upholstery
- FAST SUPPLY in Australian Living Fabrics Chelsea ECO Wool
- Pure New Commercial-Grade ECO Wool upholstery - durable, breathable and sustainable
- IN-STOCK Colours : BLACKBUTT(Black) : VIOLA ( Navy Blue) : Oniscus CHARCOAL GREY - commercial grade Australian eco wool upholstery fabric.
- Special Custom Order - your choice of fabric and colour - wide range on offer
Key Features
- high-back ergonomic task chair
- short-seat configuration
- DUO™ Dual Density Posture Support Seat
- firmer front / softer rear split-cushion construction
- high supportive backrest
- forward / backward tilt
- 6-position lumbar support
- intuitive adjustments accessible while seated
- suitable for smaller users requiring reduced seat depth
- available within the DUO Comfort™ sizing range
- commercial upholstery options
- AS/NZS 4438 compliant
- AFRDI Tested
- 160 kg user weight rating
- 10-year warranty
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Support
Elevation
Angles
Tilt
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What this means for you when the 4 elements are aligned
| Corrected screen alignment → reduced neck strain |  - S E E™ |
| Better pelvic support → less lower back fatigue |  - S E A T™ |
| Arm positioning → reduced shoulder load |  - A R M S™ |
| Movement support → reduces static load |  - S P A S™ |
R E P O S E™ Outcome
The DUO Comfort™ 300S supports Natural R E P O S E™ through appropriate seat sizing, pelvic stability and broader high-back support.
Shorter seat. Higher back. Better fit from pelvis to spine.
- DUO™ Dual Density Posture Support Seat
- Seat Width 460mm
- Seat Depth 470mm ( SHORT DEPTH SEAT )
- Seat Height 460-580mm
- Seat Tilt Range 9°
- Back 450W x 500H mm
- Backrest Height 480-545mm
- 160KG Weight Rated
Warranty: 10 Years
This product is supplied with a 10-year warranty covering defects in materials and workmanship when used under normal commercial office conditions. The warranty applies to structural and mechanical components. Normal wear and tear on soft or consumable elements is excluded.
DUO™ 300SS High Back - Short Seat
- DUO™ Dual Density Posture Support Seat
- shorter seat depth
- high supportive backrest
- firmer front / softer rear seat cushioning
- forward / backward seat tilt
- 6-position lumbar support
- can be economically Shipped Interstate - Compact Packing BOX
Who Is It For?
Suitable for users who:
- are smaller in stature
- find standard office-chair seats too deep
- want a high-back ergonomic chair
- require better clearance behind the knees
- want to sit fully back while maintaining lumbar and upper-back support
- spend extended periods working at a desk
- want the DUO support system in a shorter-seat configuration
Problem to Solve
A chair can have excellent back support and still be the wrong size.
When the seat is too deep, a smaller user may sit forward to avoid pressure behind the knees. This creates a gap between the pelvis and backrest and reduces the effectiveness of lumbar and upper-back support.
The DUO 300S addresses this with a shorter seat pan, allowing the user to sit fully into the high backrest while maintaining appropriate thigh support and knee clearance.
Its Dual Density seat then works with the taller backrest to support the pelvis and spine as one coordinated system.
S E A T™ — Primary
Support · Elevation · Angles · Tilt
The DUO 300S supports S E A T™ through:
- shorter seat geometry for smaller users
- Dual Density split-cushion construction
- softer rear pelvic cushioning
- firmer front seat support
- high-back spinal support
- adjustable seat height
- forward / backward seat tilt
- adjustable backrest angle
- 6-position lumbar / back-height adjustment
Correct seat depth is fundamental.
The user should be able to sit fully back into the chair while maintaining comfortable clearance behind the knees and effective contact with the backrest.
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DUO ™ 300SS – High Back / Short Seat
High-Back Dual Density Support — Shorter Seat Fit
The DUO™ 300SS combines the proven DUO™ Dual Density Posture Support Seat with a high backrest and a shorter seat depth designed to better suit smaller users or those requiring less thigh length.
The shorter seat allows the user to sit fully back into the chair while maintaining comfortable clearance behind the knees, helping the backrest and lumbar support function as intended.
DUO™ Dual Density Posture Support Seat.
How the support works
Sitting on the softer rear cushion allows the pelvis to settle gently towards the back of the seat, where it is held and supported between the firmer front cushion and the lower lumbar backrest as arrowed.
These three elements work together to help locate and support the pelvis:
-
Softer rear cushioning allows the pelvis to settle into the rear seating area.
-
Firmer front cushioning helps define the pelvic seating position.
-
The lower lumbar backrest provides support behind the pelvis and lower back.
This relationship is intended to support the natural inward curve of the lower back and the spine’s overall S-shaped profile, helping the user find a supported alternative to a slumped, rounded sitting posture.
Upholstery
- FAST SUPPLY in Australian Living Fabrics Chelsea ECO Wool
- Pure New Commercial-Grade ECO Wool upholstery - durable, breathable and sustainable
- IN-STOCK Colours : BLACKBUTT(Black) : VIOLA ( Navy Blue) : Oniscus CHARCOAL GREY - commercial grade Australian eco wool upholstery fabric.
- Special Custom Order - your choice of fabric and colour - wide range on offer
Key Features
- high-back ergonomic task chair
- short-seat configuration
- DUO™ Dual Density Posture Support Seat
- firmer front / softer rear split-cushion construction
- high supportive backrest
- forward / backward tilt
- 6-position lumbar support
- intuitive adjustments accessible while seated
- suitable for smaller users requiring reduced seat depth
- available within the DUO Comfort™ sizing range
- commercial upholstery options
- AS/NZS 4438 compliant
- AFRDI Tested
- 160 kg user weight rating
- 10-year warranty
Support
Elevation
Angles
Tilt
What this means for you when the 4 elements are aligned
| Corrected screen alignment → reduced neck strain | - S E E™ |
| Better pelvic support → less lower back fatigue | - S E A T™ |
| Arm positioning → reduced shoulder load | - A R M S™ |
| Movement support → reduces static load | - S P A S™ |
R E P O S E™ Outcome
The DUO Comfort™ 300S supports Natural R E P O S E™ through appropriate seat sizing, pelvic stability and broader high-back support.
Shorter seat. Higher back. Better fit from pelvis to spine.
- DUO™ Dual Density Posture Support Seat
- Seat Width 460mm
- Seat Depth 470mm ( SHORT DEPTH SEAT )
- Seat Height 460-580mm
- Seat Tilt Range 9°
- Back 450W x 500H mm
- Backrest Height 480-545mm
- 160KG Weight Rated
Warranty: 10 Years
This product is supplied with a 10-year warranty covering defects in materials and workmanship when used under normal commercial office conditions. The warranty applies to structural and mechanical components. Normal wear and tear on soft or consumable elements is excluded.
