Portwest · SKU: 262001

Portwest FR401 Bizflame Work Lightweight Stretch Panelled FR Trousers

Portwest FR401 Bizflame Work FR trousers with stretch panels, reflective legs, EN ISO 11612 and EN ISO 11611 certification. Navy or Orange, sizes S-3XL.

£36.67 each, ex VAT

£44.00 inc VAT

Ships in 1 to 2 working days

Colour: Navy

Size

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Safety Standards

EN Standards

Waterproof Rating: Not Waterproof

Thermal Rating: Not Thermal Rated

Logo Printing Available: Yes

Embroidery Available: Yes

Engineered for hazardous environments

Certified heat and arc protection

Meets EN ISO 11612 for heat, EN ISO 11611 for welding and IEC 61482 for arc flash risk.

Built for kneeling and bending

Two-tier knee pad pockets and a stretch crotch gusset reduce fabric stress in awkward working positions.

Reflective leg bands

Reflective tape bands on both legs improve visibility, in Navy or Orange colourways.

UV and static protection

40+ UPF fabric blocks 98% of UV rays, with EN 1149 antistatic performance for static-sensitive environments.

Non-magnetic build

No nickel or ferrous fixings, so the trousers will not interfere with sensitive equipment or magnetic environments.

Overview

Portwest FR401 Bizflame Work Trousers - Overview

Lightweight, stretch-panelled FR work trousers built for welding, electrical and process-industry environments where heat, arc flash and static are genuine hazards. A crotch gusset and two-tier knee pad pockets keep the fit practical through a full working day.

4standards

EN/IEC certifications

8pockets

Total pockets

40+UPF

UV protection rating

Dimensions
Leg length	Adjustable, 31in to 33in
Sizes	S to 3XL
Colours	Navy, Orange

Details
Brand	Portwest
Model	FR401
Fabric	Lightweight FR cotton with stretch panels
Fit	Unisex
Customisation	Embroidery and logo printing available
Standards	EN ISO 11612, EN ISO 11611, EN 1149, IEC 61482

Frequently asked questions

Which safety standards does the FR401 meet?

It is certified to EN ISO 11612 for heat and flame protection, EN ISO 11611 for welding, EN 1149 for antistatic performance and IEC 61482 for arc flash risk.

Can I wear these in an ATEX-classified area?

Yes, they are suitable for ATEX-classified environments and are built with non-magnetic, nickel and ferrous-free fixings.

What sizes and colours are available?

Sizes run from S to 3XL in Navy or Orange, both with reflective bands on the legs.

Is the leg length adjustable?

Yes, the leg length adjusts from 31 inches to 33 inches.

Do the knee pad pockets fit standard knee pads?

The two-tier knee pad pockets offer two height positions, so you can set the pad where it suits the job.

Can I add my company logo?

Yes, embroidery and logo printing are both available - ask when ordering.

Will the stretch panels affect the flame protection?

No, the stretch panels are part of the certified FR fabric system, so protection is maintained across the full range of movement.

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Portwest FR401 Bizflame Work Lightweight Stretch Panelled FR Trousers