From high-performance GRP composite covers to watertight tank and dispenser sumps, OPW manufactures products that can deliver in the toughest conditions. OPW manufactures a comprehensive range of access covers, both square and round, stock and custom, with the most common sizes being 900mm or 1020mm diameter in 25 or 40 tonne load ratings.

The Fibrelite brand pioneered the world’s first GRP composite access cover and the first multiport composite cover (useful where secondary contained direct filling is common) and is now the world’s leading brand of high quality GRP composite manhole covers and watertight underground access and containment systems

Cost-effective GRP watertight composite manhole covers and tank sumps designed to protect and give easy safe access to fuel lines on typical petrol stations (both pressure and suction).