
FRP Containers, Battery Boxes, Storage & Equipment Boxes
Custom-moulded composite storage solutions built for durability
We specialise in the design and manufacture of bespoke FRP (Fibre Reinforced Plastic) containers, battery boxes, storage and equipment housings. Built to your specifications, our solutions are strong, lightweight, corrosion-resistant and ideal for industrial, marine, and environmental applications.
From small, precision-moulded boxes to large, heavy-duty equipment enclosures, we offer complete flexibility in shape, finish and performance characteristics — including chemical resistance, fire retardance, and UV stability.


Lightweight, Durable & Built to Last
FRP, also known as composite plastic or fibreglass, is a highly versatile and high-performance material. With an excellent strength-to-weight ratio, it is ideal for containers and enclosures that must withstand demanding conditions — without adding unnecessary bulk or complexity.
All our FRP storage boxes are:
- Weatherproof – built to resist moisture, frost, saltwater and UV exposure
- Corrosion-proof – ideal for outdoor and marine use
- Non-conductive – safe for housing electrical systems or acid batteries
- Impact-resistant – capable of withstanding knocks, drops or vibration
- Customisable – available in a range of sizes, finishes and specialist coatings
Whether you need a rugged marine container, an acid-resistant battery box, or a multi-purpose equipment housing, Sui Generis will manufacture it to your exact specifications.
Custom FRP Moulded Solutions
From concept to completion
Our experienced team works closely with you to develop the right solution for your application. Whether you’re starting with a technical brief or just an idea, we’ll help shape it into a practical and production-ready design.
We regularly supply:
- Battery storage boxes for electric vehicles and off-grid power
- Marine containers for harsh offshore conditions
- Control enclosures for industrial and environmental equipment
- Weatherproof boxes for outdoor utilities and infrastructure
- Transportable units for mobile installations or hazardous goods
We can support one-off prototypes, low-volume batch production, or large-scale manufacturing — all delivered from our in-house UK facility with fast turnaround and full quality control.
This robust, cost-effective FRP battery box is specifically designed for the safe storage of acid batteries in demanding environments such as boat engine rooms. Featuring a secure lid, venting system, and corrosion-free construction, it offers long-term durability with minimal maintenance.
We specialise in the manufacture of custom-moulded FRP containers and equipment boxes tailored to your exact requirements. Our battery boxes are acid-resistant, non-conductive, and built to withstand the rigours of marine conditions.
Using seamless moulding techniques, we create smooth, complex curves in a single-form structure — delivering a solution that is strong, lightweight, and built to perform. Whether you need one box or many, our FRP battery enclosures provide the ideal combination of safety, strength, and protection for your onboard systems.