HAG HO3 340 Office Chair
HAG H03 340 office chair was created for modern working life where users need an office chair which can be easily adapted to suit the individuals needs. This chair adjusts quickly to different users, whatever their weight or size with its ingeniously simple rocking-chair principle, you are always in balance and ready for your next movement.
The HO3's simple mechanism allows you to adjust several features at once.
Hag HO3 340 ergonomic chair has an individual tilt tension adjustment with removable upholstery, medium back.
Also available HAG HO3 330 (small back) & HAG HO3 350 (high back).
Key Features:
- Adjusts quickly to different users
- Promotes Movement
- Affordable, quality ergonomic chair
- BalancedMovementMechanism (full freedom of movement forwards and backwards)
- Seat height adjustment
- Combined adjustment of back height and seat depth
- Footbase in plastic with sloping footplates
Wellworking Says...
""Simple to use with a medium sized back, the HO3 chair is particularly suited to work spaces that require easy adjustment for different users throughout the day."
HAG HO3 340 Office Chair FAQs
What makes the HÅG H03 340 different from other variants (H03 330/350)?
The H03 340 has a medium-height backrest with partial upholstery, balanced between the low‑back H03 330 and the fully upholstered, high‑back H03 350.
It includes independent tilt-tension adjustment on the right-hand side—ideal for tailoring suspension to your body.
How do I adjust it for my size?
A side-mounted handle lets you simultaneously adjust seat depth, backrest height and armrest angle—making it quick and user-friendly.
A separate control sets tilt tension, offering a gentle, dynamic forward/backward movement via the BalancedMovement mechanism.
What is the “BalancedMovement” mechanism?
As you lean forward, the seat edge tilts down; lean back, and it tilts up—stimulating ankle movement and improving circulation.
Can I fit armrests?
Yes. The chair is available with optional height-adjustable armrests.
What base and castors are included?
This chair comes with a 5‑star plastic base as standard, with optional aluminium finish.
There is a choice of hard castors (suitable for carpet floors) or soft castors suitable for hard/multi floors.
What fabrics and colours can I choose?
Xtreme fabric (e.g. black, grey, blue) included in base price, other fabrics and leather are available at an additional charge.
How long is the lead time?
4–6 weeks from order
Warranty details?
HAG chairs are covered by a 10‑year warranty
Is assembly required?
No, all chairs delivered by Wellworking come fully assembled and ready to use.
What standards/certifications does it meet?
Compliant with EN 1335‑B, EN 16139, EN 1729, and carries GS certification—assuring safety, durability and ergonomic design.
WARRANTY CLAIMS
All warranties are automatically applied by Wellworking and there is no need to register your product with the manufacturer.
Please keep your proof of purchase safe (it's easier for us to locate your order with the invoice or web order number) and, in the unlikely event a fault occurs, contact us by emailing service@wellworking.co.uk and we will arrange a service visit or replacement.
As a certified B Corp we are committed to putting sustainability at the core of all the products and services we offer.
Our products are designed with quality and longevity in mind and this is reflected in their long warranties.
We are working with our suppliers to reduce packaging and limit the use of non-recyclable packing materials. We take away all the packaging when we deliver products and recycle as much as we can within our offices to reduce the waste that goes to landfill.
