In-line model has removable access panel and no insulation Two 6 round duct connectors Suitable for kitchen installations Single, impact-resistant centrifugal blower wheel 20 Gauge galvanized steel housing Can be ducted horizontally or vertically. In-line ducting available with separate adapter UL Listed for use over bathtubs and showers when connected to a GFCI branch circuit Use Broan Electronic Variable Speed Control to adjust blower speed and sound level (available separately)Amperage: 1.3 CFM: 147 Collection: LoSone Duct Size: 6 Round Finish: Galvanized Steel Function: Utility Fan Heater Included: No Housing Depth: 11-3 4 Housing Length: 12-1 4 Housing Width: 12-1 4 Humidity Sensing: No Installation Type: In-Line Light Included: No Motion Sensing: No Sones: 1.1 UL Listed: Yes Voltage: 120 Wattage: 100 Weight: 22.90