Designed to maintain and re-direct air flow with minimal restriction into manholes, sewers and tanks
Combines the low profile manhole air vent, 90º elbow and built-in mounting all into one easy assembly
Air vent and elbows made from recyclable bright yellow linear low density polyethylene (LLDPE)
Vinyl polyester duct with PVC coating is heat resistant up to 180°F
Low profile elbow fits underneath the lower cross bar of the guardrail
Manhole cover fits into flat channeled corners for stabilization
Small storage bag holds ducting
Quick release draw string to drop ducting into manhole
Collapsible duct for easy entry springs back into shape once worker is down into the manhole
Combines three components, the low profile manhole air vent, 90° elbow and built-in mounting all into one easy assembly
Reducing overall size, storage and shipping cost