To simplify installation, a Project Pack is available with multiple fan housings. When drywall work and painting is complete, the fan components needed to finish the job are available in a separate packages and model numbers. The finish kit allow motor/blower and grille assemblies to be ordered separately, nearer project completion, to help avoid losing, damaging or having to store components.Includes light bulbFits 2 in. x 4 in. ceiling or wall constructionEffectively ventilates bathrooms up to 45 sq. ft.Ul listed for use over bath rubs or showers when connected to a GFCI circuitFor any questions regarding product features, installation, or specifications, please call our Technical Services Dept. at 800-637-1453, Monday-Friday, 8:00 am – 7:00 pm EST.