Quiet Sound, Air flow 60CFM, Voltage: 12V With LED light, bright light in the dark. Waterproof and dustproof, energy saving. Effective, extremely quiet ventilation clears humidity and odors quickly. 45mm-140 mm ajudtable mounting height ,you can directly cut off a part of the pipe to meet the installation requirements. With a switch for easy control. Fitment: for marine, boat, yacht, RV, camper, trailer, motorhome and so on. Specification: Material: Plastic Fan Diameter: 135 mm / 5.31 inch Fan Height: 100 mm / 3.94 inch Mounting Hole Diameter: 118 mm / 4.65 inch Max. Mounting Height: 140 mm / 5.51 inch Min Mounting Height: 45 mm / 1.77 inch Revolving Speed: 1800 Turn/Min Blast Capacity: 60CFM Volt: 12 V Package Includes: 1 Piece Exhaust Fan