100mm Integral Seal Rigid Hatch Cover - Black

Allen Hatch Covers are made from a lightweight polypropylene. Available in Grey, Black and White. 

 A.137 and A.237 are a non ‘O’ ring design and have exposed fixings.

A.337, A.537 and A.637 all require a rubber ‘O’ Ring to keep them watertight.

A1737, A1837 and A1937 feature a fully threaded cover with watertight seal.