Roof Vent Pipe Boot Base Shape Rectangular Base Material Plastic Cap/Collar Material EPDM Material Thickness Not Applicable For Roof Angle 45 Degrees For Number of Pipes 1 For Maximum Pipe Size 19 in For Minimum Pipe Size 9 in Base Height 14 1/2 in Base Width 11 in Base Diameter 8 in Seal Material Silicone Top Opening Open Application Pipe Vents Product Type Retro Master Flash UV Protected Yes For Roof Type Pitched Maximum Ambient Temperature 275 Degrees F