Allegro Industries

Allegro_Industries_Manhole_Ventilation_Passthru

VENTILATION

Allegro Industries' Manhole Ventilation Passthru is designed to maintain and redirect airflow into manholes, sewers, and tanks. The 11-pound, high-impact polyethylene unit features an air vent, a 90-degree elbow, a built-in mounting, and a collapsible duct that can withstand temperatures up to 180 degrees Fahrenheit.

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