Allegro Industries MVP Manhole Ventilation Pass Thrus (9510-50)

MVP Manhole Ventilation Pass ThrusDesigned to maintain and re-direct air flow with minimal restriction into manholes, sewers and tanksCombines the low profile manhole air vent, 90º elbow and built-in mounting all into one easy assemblyAir 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°FLow profile elbow fits underneath the lower cross bar of the guardrailManhole cover fits into flat channeled corners for stabilizationSmall storage bag holds ductingQuick release draw string to drop ducting into manholeCollapsible duct for easy entry springs back into shape once worker is down into the manholeCombines three components, the low profile manhole air vent, 90° elbow and built-in mounting all into one easy assemblyReducing overall size, storage and shipping cost