FeaturesResilient anti-vibration motor mountsDynamically balanced polymeric centrifugal blower wheel for quiet, efficient performanceLow profile styling grille blends with any decorRugged 20 ga galvanized steel housing with 0.5 in acoustic insulation inside8-position mounting brackets for easy installation and greater adaptability to various mounting requirements, automatic backdraft damper located within duct connectorMay be installed as an in-line ventilator with addition of accessory kit model 981L, for controlling use model 57V (ivory)/57W (white) 3 A, electronic variable speed control or model 59V (ivory)/59W (white) 60 min time control or model 61V (ivory)/61W (white) 15 min time control or model 71V (ivory)/71W (white) 12 hr time controlPlug-in permanently lubricated thermally protected motor designed for continuous operationLow rpm for quiet operation blower214 cfm at 0.1 in SP horizontal, 210 cfm at 0.1 in SP vertical210 cfm at 1/8 in SP horizontal, 1.7 Sones, 207 cfm at 0.1 in SP at 1/8 in SP vertical, 2 SonesRound ductUL listed for use over bathtubs and showers when connected to a GFCI circuitSquare shape grille740 rpm horizontal, 760 rpm at 0.1 in SP vertical AC motor