For bathroom heat, selective temperature control gives you the most efficient operation, and that"s what you"ll get with the Broan 163 2-Bulb 250W Heater. This bulb heater, which uses two BR40 bulbs (not included), gives you much-needed warmth when you need it, without touching your central thermostat. Its bulbs can be used individually when you don"t need so much heat, or together when it"s colder. The heater features adjustable mounting brackets that can span up to 24 inches, with keyhole slots, and its housing can be vertically adjusted after your ceiling is finished to give you a perfect installation. Dimensions:Housing: 14.25L x 8.38W x 6.38H inches Grille: 15.63L x 10.25W inches Additional Features:Bulbs can be used separately or together Suitable for use in insulated ceilings Adjustable mounting brackets span up to 24 inches Mounting brackets have keyhole slots Can adjust housing vertically after ceiling finished Uses one 250-watt BR40 bulb (not included) Uses Broan control (not included) About Broan-NuTone Broan-NuTone has been leading the industry since 1932 in producing innovative ventilation products and built-in convenience products, all backed by superior customer service. Today, they"re headquartered in Hartford, Wisconsin, employing more than 3200 people in eight countries. They"ve become North America"s largest producer of medicine cabinets, ironing centers, door chimes, and they"re the industry leader for range hoods, bath and ventilation fans, and heater/fan/light combination units. They are proud that more than 80 percent of their products sold in the United States are designed and manufactured in the U.S., with U.S. and imported parts. Broan-NuTone is dedicated to providing revolutionary products to improve the indoor environment of your home, in ways that also help preserve the outdoor environment. 250 Watts, 4.3 Amps. UL-listed for 60 degrees C wiring. Provides instant, energy-saving comfort in bathrooms. Silent operation.