Dual bulb heat lamp and 70 CFM exhaust fan. Turns cold, damp bathrooms into a warm, comfortable room. For bathrooms up to 55 square feet. 70 CFM - 4.0 SONES - 7.35 amps 4" duct adapter Large venturi assures quiet, efficient ventilation. Up to 750 watt of instant heat provided by 2 R-40 lamps up to 375 watts each (NOT INCLUDED) Wired for switch, timer or single pole operation. Use with conventional wall switch or timer. UL Listed I.C. for insulated ceilings. Easy installation with mounting to either 16" oc or 24" oc joists with rigid, 4- point mounting system. WHITE GRILL ROUGH OPENING - 8-1/2" x 14-5/16" PLEASE NOTE THE SHIPPING AND RETURN POLICIES NEAR THE BOTTOM OF OUR HOME PAGE.