Manhole Ventilation Passthru (MVP) Allegro's MVP is the first manhole system that combines the low profile
manhole air vent, 90° elbow and built in mounting all in one unit. This
unit comes with a collapsible duct, for easy entry, stored in a small
storage bag that can be dropped down into the manhole with a quick
release of the drawstring. The Collapsible duct springs back into shape
once worker is down into the manhole. The ducting is vinyl and polyester
with PVC coating and heat resistant up to 180° F. The manhole cover
fits into a flat channel corner for stabilization. Compact, lightweight
and made from Linear Low Density Polyethylene (LLDPE), this unit is easy
to store and ships in one small carton. Recyclable.
![]() Price: $199.00 |







