GRP Enclosures
Full UK Range
Single door cabinets to walk-in kiosks. ATEX certified. From stock.
The Enclosure Company supplies the UK's most complete range of GRP enclosures — from compact junction boxes to large walk-in substations. Trusted supplier for ALL major manufacturers, with over 50 years experience finding exactly the right electrical enclosure for you.
What Is a GRP Enclosure?
A GRP enclosure (Glass Reinforced Plastic) is a protective housing made from polyester resin and glass fibre reinforcement — stronger than steel by weight, completely non-conductive, corrosion-resistant in virtually any environment, and maintenance-free for 25–30+ years.
GRP requires no painting, no rust treatment and no corrosion inhibitors — making it the preferred specification for outdoor electrical installations, utility infrastructure, coastal environments, and increasingly, EV charging and renewable energy applications across the UK.
GRP Enclosures — Full Range
Single Door GRP Cabinets
Compact to mid-size for wall and post mounting. IP54-IP65. Multiple sizes in UK stock.
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Double Door GRP Cabinets
DNO and utility kiosks. IP65. 100mm flange base. Ply backboard as standard.
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Walk-In GRP Kiosks
Substation, BESS and infrastructure kiosks. Single and double skin construction.
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ATEX Certified GRP
Pre-assembled Zone 1 & 2. IP66. SIRA08ATEX3213. Ex e/ia/ib. Stock items.
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GRP Roadside Cabinets
IP55, UKPN compliant roadside cabinets. Olive green or grey. Single and double door.
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Featured GRP Products
GRP Enclosure IP Ratings
Ready to Specify Your
GRP Enclosure?
Free, no-obligation quotes. Same-day response on standard enquiries. UK technical team.