Transfer Fan, Room to Room, CFM @ 0000-In SP 75, Sones HVI 1.42, Voltage 120, 60 Hz, 0.5 Amps, Housing Length 11 7/8 In, Housing Width 3 1/2 In, Housing Height 4 3/4 In, Grille Length 15 7/8 In, Grille Width 7 3/4 In, Discharge Width 13 3/4 In, Discharge Height 3 In, Includes Mounting hardware and cut-out Templates Room-to-Room Transfer FansInstall in any interior wall with studs 16" on center. Intake and diffuser can be mounted high, low, or across from each other. Vibration-isolated cross-flow blower is factory balanced. Diffuser has built-in, unexposed turning vane. Include mounting hardware and templates. 3CWP1 requires hardwired 120VAC connection from within wall cavity; use wall switch or 120VAC thermostat to activate (sold separately). Plug-in 3CWP2 includes On/Off switch with concealed power cord; must be mounted adjacent to an electrical outlet.ETL Listed for U.S. and Canada.Aluminized steel blower grille and diffuser with paintable, white powder-coated finish