Retro Master Flash 8 in. x 8 in. Vent Pipe Roof Flashing with 9 1 4 in. 16 1 4 in. Adjustable Diameter Item Weight:2.90 Control Type Included Wall Switch Item Weight:17.637 Control Type Included Wall Switch Included Recommended Room Size Small Room Number of Speeds 3 Ceiling Fan Size Small Fan Blade Material Plastic Commercial Residential Residential Returnable 180 Day Included Angle Mount Hardware 875 Number of Batteries Included 1 Battery Amp Hours 1 Do not use petroleum based products on Retro Master Roof Flashings Retro Master Boots are designed for installations where continuous pipe or obstructions prevent the use of a standard flashing