MVP Manhole Ventilation Passthru

The Manhole Ventilation Passthru is designed to maintain and re-direct the air flow with minimal restriction into manholes, sewers, and tanks. Made of Linear Low Density Polyethylene. Low profile elbow. Collapsible duct for easy entry, springs back into shape. Quick release draw string to drop into manhole. Recyclable,weighs 11 lbs, and comes with a storage case.