Powerful and Efficient: This RV roof fan provides a fantastic air circulation for your RV Tralier or Camper. And it moves a lot of air but only use little power because of this durable and stable can motor. QUIET: 12 volt RV roof vent can intake or exhaust fresh air immediately and stay cool without distracting noise. 3-SPEED FAN REVERSIBLE : The fan can be operated in Reverse/Forward mode. This RV roof vent fan available in Low, Medium, Max on forward/reverse direction and Medium, Max on reverse/forward direction. EASY-TO-INSTALL: Fits all rough 14” x 14” inch roof openings. We will response within 24 hours. UV PROTECTION POWERFUL 12V RV ROOF VENT 3 Speed Reversible. Fit into all 14 inch x 14 inch RV roof openings. · Power: 18W / Current:1.8A / Voltage:12V. · Fan Motor RPM: 1200/M. ·Size: 14” x 14” opening. ·Speeds: Three Fan Blade Speeds. Suits hole size: 40cmx 40cm. · Fuse Protection: 5A slow blow fuse. · CFM : L speed 470CFM, M speed 650CFM, CFM: H speed 950CFM. · Air Flow Direction: Forward and reversible. · Screen: Included and Removable. · Fan Blade: 10 Clear fan blades. · Lid Material : High quality PC material with UV protection. · Install roof thickness: 1-3/5 inch to 9-3/4 inch. · Opening size: 14 inch x 14 inch. · Garnish: 16 inch x 16 inch. · Maximum Opening: 60 degree. · Vent Close Height: 4 inch. · Vent Open Height: 14 inch. RV Roof Ventx 1. Trim Screws x 4. Extra 5 Slow fuse x 1. Note: The vent can be running as ceiling fan when the cover is closed.