Customised designs for a fully bespoke GRP enclosure solution

Our Bastion range of GRP bespoke enclosures has endless possibilities. With our talented in-house production team, we can manufacture any size of grp enclosure you need. Designs can also include a large range of optional extras, including venting, hatches, electrical packages, heating, and more. An excellent, superbly constructed range for a truly unique, tailor-made solution.

From your initial enquiry, our dedicated sales team can provide a remote project management service for your bespoke GRP enclosure. They will ensure you are kept up-to-date through your journey with us and will be on hand to attend to your queries. From semi-gloss finish to textured finish, our team can ensure you get the best quality, short lead times and value for money.

Bastion Range Sizes & Prices

All the guide prices below include technical specifications and are excluding VAT. Any GRP enclosure enhancements will be priced in a quotation.

grey grp bespoke enclosure

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Technical Specifications

All of our technical specifications are included in our standard price for each GRP bespoke enclosure. Please select one of the features on the enclosure to find out more:

textured grey finish grp enclosure
Textured finished

Semi-gloss finish also available.

Flat roof

Two-way pitched roof available.

Double lockable doors

Variety of locking mechanisms available

Pressed aluminium vents

Sizes from 100mm x 100mm available

Product Enhancements

Our GRP enclosures can be designed to your requirements. Listed below are details of a number of enhancements that can also be fitted to your enclosure.


aluminium vent for grp cabinets

Pressed Aluminium Vents can be installed onto the enclosure, if a constant airflow is required.


4 way consumer unit

Electrical installation package with light and sockets available.


Bunded Floor inside GRP electrical cabinets

Floors come open as standard with 100mm fixing flanges. You can also have a solid floor or if required a load bearing floor.

Plywood Backboard

18mm plywood backboards available.

Bastion Range Delivery Options

hiab crane lorry

Hiab Crane Delivery

Our Enclosures can be delivered via Hiab lorry where there are no means to off-load at the delivery address. Enclosures are shrink-wrapped for protection during transportation.


Our enclosures can be delivered via pallets, depending on the size of the unit. The enclosures are shrink-wrapped for protection during transportation. A forklift or telehandler may be required for offloading.

Flat Bed Delivery

Our enclosures can also be delivered via flatbed lorry for off-loading via the client. The enclosures are shrink-wrapped for protection during transportation.

Get your Bespoke GRP Enclosure today.