Manhole Ventilation Passthrough, 12 in
The first manhole system that combines the low profile manhole air vent, 90 elbow, and built-in mounting all in one uni|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|
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 first manhole system that combines the low profile manhole air vent, 90 elbow, and built-in mounting all in one uni
