Legendary size Hercules™ D400 manhole coversOur Hercules range has been designed as the ideal solution when a very large manhole cover is required for a D400 Group 4 environment. The products have been designed and manufactured to meet the requirements of BS EN 124:2015. Additionally, the covers include features designed to provide both greater operator safety and operational longevity. ![]() The double triangular covers are indexed to ensure correct orientation when fitting. The cover’s M16 blank bolt can be replaced with a threaded lifting eye for mechanical lifting – the position of the bolt is at centre of mass, allowing safe and level lifts. The covers feature a small window allowing for easy and safe inspection without the need to remove the entire cover.
Square or rectangular manhole covers
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