Bulb heater/fans provide silent warmth and superior ventilation in a compact package|Heat and ventilation functions may be controlled separately or in combination so you're always in control of the environment|Very low profile, white polymeric grille blends into most ceilings|Use 250 W BR40 size infrared bulbs (not included) for comfortable heating performance|Sturdy steel housing, a plug-in, permanently lubricated motor adjustable mounting brackets with keyhole slots and a 4 in round duct connector with tapered sleeves combine to make installation logical and simple|Control operation with a choice of wall controls, available separately, 57W, 57V, 59W, 59V, 61W, 61V, 63W, 63V, 64W, 64V, 68W, 68V, 70TW, 71V, 72W, 72V, 269WL, 269VL, DH100W or T24H|Ceiling heaters are intended to provide supplemental heat and not to take the place of the home's main heat source|70 cfm fan provides excellent ventilation at a quiet 3.5 Sones and will keep your bath free from steam or bathroom odors|Motor engineered for continuous operation|Polymeric dampers eliminate metallic clatter while preventing backdrafts|Polymeric 4 in round duct connectors with tapered sleeves provide easier, positive ducting|Adjustable mounting brackets with keyhole slots that span upto 24 in