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136
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Composite Manhole
The Composite Manhole is
manufactured with a lightweight composite cover, which is stronger
than steel at less than 25% the weight. The composite cover is
constructed of environmentally safe materials, which are not
permeable or weakened if exposed to hydro-carbons. The composite
materials are non-conductive to electrical currents and do not develop
and/or hold electrical charges. The manhole also features a 1 1/2" wide steel ring frame, an easy grip recessed handle on
the cover, 14 gauge galvanized steel skirt and carries the H-20
load rating. The Model 136WT is also a rain tight manhole, which
includes four 1/2" flush mount stainless steel bolts and a
Buna-N gasket.
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