What bench height does the 405 suit?

The 405 is a bench-height chair. Its seat adjusts from 585mm to 835mm, which suits standing benches finishing around 900 mm high. If you’re not sure, send us your bench height and we’ll confirm the right model.

What is the weight capacity of the 405?

The 405 is fitted with a 20-stone gas strut, which is approximately 127 kg.

Is the 405 suitable for cleanrooms?

Yes. The 405 is built for cleanrooms, with sealed upholstery in Xtreme Fabric (100% recycled) or wipe-clean Vinyl, smooth wipe-clean surfaces and a polished aluminium base in place of the standard nylon base. It suits ISO-classified cleanrooms, GMP production areas and pharma or biotech labs. For static-sensitive cleanroom work, see our ESD range.

Can I have feet or castors on the 405?

The 405 comes with feet as standard. Castors are available for a price uplift. Soft-tyre castors are recommended for hard or vinyl flooring; please also consider the safety requirements of your working environment when choosing castors.

What guarantee and delivery apply to the 405?

UK mainland delivery is included in the price. Delivery to the Scottish Highlands and Northern Ireland is quoted on request. Every chair comes with a 5-year guarantee against normal wear and tear from the date of delivery, used under normal conditions during a conventional working day. In a shift or 24/7 working environment the guarantee is 2 years from the date of delivery. Purchase orders accepted from schools, colleges, universities, NHS trusts, government organisations and registered businesses. VAT invoice supplied. On finance systems we may appear as Mark Finn Lab Furniture or Lab Tables.

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Upholstered Bench-Height Cleanroom Chair (405)

Sale price: £261.36
Regular price
Regular price: £261.36
Unit price: per

-0%

Not sure of the height? See the bench height guide →

Price excludes VAT. VAT invoice supplied on request. UK mainland delivery included.

Product variants

✔ Purchase orders accepted
✔ VAT invoice supplied
✔ 5 year guarantees
✔ Same-day quote response

We may be set up on your finance system as Mark Finn Lab Furniture or Lab Tables.

Quantity

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Specifications

Model number	405
Chair type	Upholstered cleanroom bench-height chair
Seat dimensions	520 mm wide × 520 mm deep
Overall height	1070–1320 mm
Seat height adjustment	585–835 mm
Base dimensions	660 × 660 mm polished aluminium
Weight capacity	20 stone / 127 kg
Gas lift	20-stone-rated gas strut
Seat material	Xtreme Fabric (100% recycled) or Vinyl (cleanroom-suitable)
Base options	Feet as standard; castors incur a price uplift
Mechanism	2-lever seat-height and back-rake adjustment
Guarantee	5 years (2 years in shift / 24-7 use)
Delivery	UK mainland included. Scottish Highlands & Northern Ireland on request.

Description

The 405 is an upholstered bench-height cleanroom chair — a fully adjustable chair with footring for controlled environments around 900 mm benches, where seat comfort is wanted for long sessions but the build must still suit wipe-down. Purchased over 1,087 times to date.

Choose the 405 where operators sit for extended spells — microscopy, assembly and inspection in controlled space. Where the regime demands a solid seat with no upholstery at all, the PU-seat 401 is the stricter specification; for seated positions, see the desk-height 406. The lab chair height guide confirms the class.

Seat materials

Available in wipe-clean Vinyl or Xtreme Fabric (100% recycled), both included in the price. Vinyl is the usual cleanroom choice; see the full colour and materials range.

Feet or castors

Supplied with feet as standard, which is usually right for a tall chair at a standing bench. Castors are available at a price uplift — specify soft-tyre for hard or vinyl flooring, and lock-off or lock-down castors where the chair must stay put. Consider the safety requirements of your working environment before choosing castors on a high chair.

Accessories

Available to order with a seat slide (adjusts seat depth for taller or shorter users), adjustable arms, ring arms (better where fixed arms would foul the bench), lumbar support or seat tilt. Priced individually — see the accessories page or ask on your quote.

Who uses the 405

Supplied to controlled environments at McLaren Racing, Baxter Healthcare and DePuy Synthes. The cleanroom range is also in use at Bristol Myers Squibb and Guy’s & St Thomas’ NHS.

Ordering

Purchase orders accepted, VAT invoice supplied. Volume pricing from 4 units. Delivery included to mainland Britain. UK support and spares available — we have been supplying laboratory and technical seating since 1986.

Frequently Asked Questions

What bench height does the 405 suit?: The 405 is a bench-height chair. Its seat adjusts from 585mm to 835mm, which suits standing benches finishing around 900 mm high. If you’re not sure, send us your bench height and we’ll confirm the right model.
What is the weight capacity of the 405?: The 405 is fitted with a 20-stone gas strut, which is approximately 127 kg.
Is the 405 suitable for cleanrooms?: Yes. The 405 is built for cleanrooms, with sealed upholstery in Xtreme Fabric (100% recycled) or wipe-clean Vinyl, smooth wipe-clean surfaces and a polished aluminium base in place of the standard nylon base. It suits ISO-classified cleanrooms, GMP production areas and pharma or biotech labs. For static-sensitive cleanroom work, see our ESD range.
Can I have feet or castors on the 405?: The 405 comes with feet as standard. Castors are available for a price uplift. Soft-tyre castors are recommended for hard or vinyl flooring; please also consider the safety requirements of your working environment when choosing castors.
What guarantee and delivery apply to the 405?: UK mainland delivery is included in the price. Delivery to the Scottish Highlands and Northern Ireland is quoted on request. Every chair comes with a 5-year guarantee against normal wear and tear from the date of delivery, used under normal conditions during a conventional working day. In a shift or 24/7 working environment the guarantee is 2 years from the date of delivery. Purchase orders accepted from schools, colleges, universities, NHS trusts, government organisations and registered businesses. VAT invoice supplied. On finance systems we may appear as Mark Finn Lab Furniture or Lab Tables.