Pneumatic

12″ Manhole Ventilation Passthru (MVP)

Allegro's 2″ Manhole Ventilation Passthru (MVP) (9510-60) is the first manhole system that combines the low profile manhole air vent, 90° elbow and built in mounting all in one unit. This unit comes with a collapsible duct for easy entry,...

20" Jet Fan (9 7/8" x 24 3/4" diameter)

This heavy duty aluminum fan by Allegro can be used as a blower or exhaust by simply reverse mounting. Compressed air is pushed through a nozzle at the end of each blade creating the fan to propel at speeds up to 11,000 CFM (20″ model) or 16,9000...

24" Jet Fan (11 3/4" x 32 3/4" diameter)

This heavy duty aluminum fan created by Allegro can be used as a blower or exhaust by simply reverse mounting. Compressed air is pushed through a nozzle at the end of each blade creating the fan to propel at speeds up to 11,000 CFM (20″ model) or...

8″ Manhole Ventilation Passthru (MVP)

The Allegro 8″ Manhole Ventilation Passthru (9510-50) offers the first manhole system that combines the low profile manhole air vent, 90° elbow and built in mounting all in one unit. This unit comes with a collapsible duct, for easy entry,...