Convenient options for todays contractor. Broan Housing Packs include rough-in housings only, making multi-unit installation more convenient. When drywall work and painting is complete, the fan components needed to finish the job are available in separate packs and model numbers. The finish kit includes the motor plate, motor, wheel and grille.Duct 3 in.Damper/plastic duct connector includedWill work in a 2 in. x 6 in. wall or ceiling constructionUL listed for use over bathtubs 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.