Allegro® 8" X 20" Polyester Vinyl Manhole Ventilation Passthru

Allegro¨ 8" X 20" Polyester Vinyl Manhole Ventilation Passthru

Allegro¨ Manhole Ventilation Passthru features a low-density polyethylene construction and has a low-profile design. Passthru with 90 deg elbow, manhole air vent can be stored easily and the manhole cover suits into a flat channel corner for stabilization.

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