Allegro 9510-50 MVP Confined Space Manhole Ventilation Passthru Cold Weather This is a great selection

This is a great selection for high traffic areas near your confined space access point

It is made of tough powder coated steel for corrosion resistance

DBI/SALA beam anchors provide economical flexibility

24 Unit - Serves Up to 50 People - 9 1/2" L X 2

Allegro 9510-50 MVP Confined Space Manhole Ventilation Passthru Cold Weather This is a great selectionAllegro's new 9510 50 Manhole Ventilation Passthru is a really cool piece of equipment. It is a incredibly simple way to ventilate a space while at the same time still allowing access to the space for your workers. It is an excellent and less expensive alternative to the Saddle Vent system. Allegro's Manhole Ventilation Passthru (MVP) is made with a low profile air vent for the manhole itself, a 90 elbow, and built in mounting. The length from the top