Our 24 inch composite manhole covers are an ideal direct replacement for 24″ cast iron manhole covers and 24″ CI manhole lids. These FRP/GRP composite 24 inch manhole covers and lids have zero scrap value. Would be thieves simply move on when they find out they are not dealing with common cast iron 24″ manhole lids. These FRP or Polymer 24 inch manhole lids are much lighter than traditional cast iron manholes of the same size, yet are fully traffic rated (40,000# proof load per AASHTO M-306, H-20). This 24″ manhole cover measures 23 3/4″ outside diameter and fits most 23 1/2″ to 24″ frames. These plastic 24 in manhole lids improve worker safety and help prevent back and finger injuries that are common with 24 inch cast iron lids.
Our heavy duty 23 3/4 inch (actual diameter) manhole lids feature a diamond pattern slip-resistant surface. The manhole lid is secured using a heavy duty coated worm gear operated by a corrosion resistant pentagon bolt from street level. Learn more about 23 3/4 inch frp manhole covers and other fiberglass and composite manhole covers. Also consider our full line of fiberglass manhole covers with frames.