Acme Skymaster Acme Skymaster Fan EXTRA LARGE HINGED HOOD Provides large opening area around the full perimeter for efficient air flow through the ventilator when installed on a standard 8″ high curb. Hinged for easy access to motor and drive. Preassembled for quick, easy field installation. DAMPER BOX For easy mounting of backdraft damper inside field constructed roof curb. For use where wall space is unavailable for conventional wall mounted Windmaster fans. Mounted on field constructed curb opening on roof of house. If possible, install on north end of roof. FAN SIZE MODEL HP RPM CERTIFIED CFM VS. S.P. CERT. MAX. BHP* SHIP. WT. DAMPER MODEL DAMPER BOX INSIDE FRAMED OPENING 0″ .100″ .125″ CFM SONES CFM SONES CFM SONES 30″ EC30E EC30F 1/41/3 434508 62307290 8.411.1 48006170 9.110.0 –5830 –10.7 .25.41 237240 AR34 DB34E 34 1/2″ 36″ EC36F EC36G 1/31/2 431495 904010380 11.314.6 74409010 11.014.3 69908640 11.614.1 .41.62 300307 AR40 DB40E 40 1/2″ 42″ EC42G EC42H EC42J 1/23/41 385442485 128201472016150 10.714.215.5 107401293014530 9.912.314.4 101701246014110 10.012.314.2 .59.891.18 407411418 AR48 DB48E 48 1/2″ Performance shown is for Installation Type A: Free inlet, Free Outlet Power Rating (BHP) does not include drive losses. Performance ratings do not include the effects of appurtenances in the airstream. The sound ratings shown for Model EC is loudness values in fan sones at 5 feet (1.5m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for Installation Type A: Free Inlet fan sone levels.