Roof Vent Pipe Boot Base Shape Round Base Material Plastic Cap/Collar Material Plastic Material Thickness Not Applicable For Roof Angle 45 Degrees For Number of Pipes 1 For Maximum Pipe Size 13 in For Minimum Pipe Size 7 in Base Height Not Applicable Base Width 16 1/2 in Base Diameter 16 1/2 in Seal Material Silicone Top Opening Open Application Pipe Vents Product Type Universal Master Flash UV Protected Yes For Roof Type Pitched Maximum Ambient Temperature 212 Degrees F