Roof fan DH

flow rates up to 15,000 m³/h size: 190 - 630 mm (impeller diameter) horizontal outlet backward curved impellers solid weatherproof casing easy to install The casing of the Rosenberg roof fans (DH, DHE) consists of seawater-resistant aluminium and a base frame with integrated inlet cone. model - DH Hood made of seawater-resistant aluminium; base frame with integrated inlet cone made of galvanised steel sheet model - DHE up to size 500: Hood made of seawater-resistant aluminium; base frame with integrated inlet cone made of galvanised steel sheet from size 560: Hood made of galvanised steel; base frame with integrated inlet cone made of galvanised steel sheet and additionally plastic coated Impellers are mounted directly to the rotor of the external rotor EC motor and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11. model - DH Backward curved impellers made of plastic. model - DHE Efficiency optimized and sound optimized backward curved impellers of the REVOLUTION series made of plastic. The drive motors are fitted with a set-up terminal box in IP54, which is easily accessible for the electrical connection after removing the rain guard. Upon request, the device switch can be mounted (optional) on the casing of the fan.