Double Seal Ductile Iron Manhole Cover and Frame

Note : The above dimensions are for reference only. Please refer to the actual products.

The double-seal feature of the manhole covers and frames prevents foreign
Materials from entering into the underground sewage system and also prevents the
pungent smell and/or methane from getting out of the underground sewage system.

SW for storm water (with circumscribed raised stubs on the cover)
FW for foul water (with rectangular raised stubs on the cover)