ErgoAlta ST8
ST8 features dual seat versions and an extra-large adjustable headrest, with 6‑level backrest, sliding seat depth, 3D armrests, synchronous tilt and a retractable footrest.
It adopts dual lumbar support design and is available in gray or black frame, paired with either mesh or thick 90mm foam seat; its lift and support structure is made of full aluminum alloy.
Equipped with a high‑safety gas lift, it conforms to ergonomic principles and professional standards. Durable, smooth and stable, it is ideal for offices, homes and commercial project bidding.
Explore Material Science
- Ergonomic Chair
- Dual Lumbar Support
- Aluminum Alloy Structure
- Multi‑Adjustable
- Dual Seat Versions
Key Feature
Dynamic Dual-Zone Lumbar Support
Adaptive Alignment:
This independent dual-back system automatically follows your movements for continuous spine alignment and posture correction.
Commercial Performance:
Engineered as a heavy-duty office chair solution to eliminate back strain, enhancing workplace productivity for long-term use.
Solid Aluminum Build
Heavy-Duty Stability:
Unlike plastic alternatives, our die-cast aluminum alloy system ensures rock-solid structural integrity and long-term durability.
Precision Engineering:
Experience ultra-smooth seat height adjustment and silent support, built to meet the highest office furniture standards.
Customizable Dual-Seat Configurations
Tailored Comfort for Every Market Preference.
90mm High-Density Foam:
Superior pressure relief for all-day seating, with high resilience to maintain shape after prolonged use.
High-Tensile Mesh:
Maximum breathability and airflow, featuring anti-fray, wear-resistant fabric that meets commercial furniture durability standards (suitable for hot climates, high-traffic offices).
View Full Fabric Specification Sheet
Adjustable & Secure
Seat Sliding & 4-Level Tilt Lock
Master your posture with an advanced seat depth sliding system and 4-level tilt lock that seamlessly adapts to different body types for the ultimate work-rest balance.
Oversized Headrest & 3D Armrests
An oversized headrest designed to provide precision ergonomic support for your neck, shoulders, and wrists and experience full-body relief with 3D adjustable armrests.
Class-4 Gas Lift & Wired Control: Stability Meets Flexibility
Equipped with Class-4 Gas Lift & Silent Casters, paired with sturdy aluminum alloy five-star base and flexible wired control mechanism, the chair ensures stability, quietness and effortless adjustment.
Integrated Footrest : Seamless Work-to-Rest
Hidden footrest helps reduce leg and back pressure, and folds away under the seat when not in use. Recline and height adjustments allow easy positioning for a comfortable midday break.
Technical Specifications
Dimension
Detailed Parameters
| Category | Feature | Specification Details |
|---|---|---|
| Basic Info | Model Name | ST8 Elite Ergonomic Series |
| Frame Material | Die-Cast Aluminum Alloy (High-Strength) | |
| Color Options | Industrial Grey / Classic Black | |
| Dimensions | General Dimensions | 27.5"W x 27.5"D x 42"-49"H |
| Seat Width/Depth | 20.5" / 18.5" - 20.5" (Adjustable) | |
| Net Weight | Approx. 61.7 lbs (28 kg) | |
| Performance | Weight Capacity | 330 lbs (150 kg) |
| Gas Lift Class | Class 4 (SGS & BIFMA Certified) | |
| Tilt Mechanism | 4-Position Sync-Tilt & Locking (90° - 135°) | |
| Ergonomics | Lumbar Support | Dynamic Dual-Zone (Self-Adaptive) |
| Backrest Height | 6-Level Precision Adjustment | |
| Armrests | 3D Adjustable (Height, Depth, Angle) | |
| Headrest | Oversized, Height & Angle Adjustable | |
| Materials | Seat Versions |
Option A: 90mm High-Density Molded Foam Option B: High-Tensile Breathable Mesh |
| Casters | 60mm Silent PU Casters (Floor-Friendly) | |
| Logistics | Assembly | Required (Instruction & Video Support Provided) |
| Warranty | 5-Year Limited Commercial Warranty |
| Category | Feature | Specification Details |
|---|---|---|
| Basic Info | Model Name | ST8 Elite Ergonomic Series |
| Frame Material | Die-Cast Aluminum Alloy (High-Strength) | |
| Color Options | Industrial Grey / Classic Black | |
| Dimensions | General Dimensions | 27.5"W x 27.5"D x 42"-49"H |
| Seat Width/Depth | 20.5" / 18.5" - 20.5" (Adjustable) | |
| Net Weight | Approx. 61.7 lbs (28 kg) | |
| Performance | Weight Capacity | 330 lbs (150 kg) |
| Gas Lift Class | Class 4 (SGS & BIFMA Certified) | |
| Tilt Mechanism | 4-Position Sync-Tilt & Locking (90° - 135°) | |
| Ergonomics | Lumbar Support | Dynamic Dual-Zone (Self-Adaptive) |
| Backrest Height | 6-Level Precision Adjustment | |
| Armrests | 3D Adjustable (Height, Depth, Angle) | |
| Headrest | Oversized, Height & Angle Adjustable | |
| Materials | Seat Versions |
Option A: 90mm High-Density Molded Foam Option B: High-Tensile Breathable Mesh |
| Casters | 60mm Silent PU Casters (Floor-Friendly) | |
| Logistics | Assembly | Required (Instruction & Video Support Provided) |
| Warranty | 5-Year Limited Commercial Warranty |
Looking for More Designs? Explore Our Portfolio
Discover more ergonomic innovations designed for global markets. OEM/ODM available.
High-performance seating for global bulk orders.
Get a Volume Quote for Ergo Alta ST8
- Tiered pricing for wholesalers
- Custom branding & OEM options
- SGS/BIFMA certified quality