Ventline RV Roof Vent Smoke w/12 Volt Fan, Putty & Screws Smoke Plastic Wedge Shape Aerodynamic Lid 12 Volt D.C. Fan Fit a rough opening of 14.25" X 14.25" Garnish Ring Included, Putty Tape & Screws Included Galvanized Mounting Flange (caution it's sharp)