Roof Vent Pipe Boot Base Shape Square 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 4 in For Minimum Pipe Size 1/4 in Base Height 8 in Base Width 8 in Base Diameter Not Applicable Seal Material Rubber Top Opening Open Application Pipe Vents Product Type Master UV Protected Yes For Roof Type Pitched Standards IAPMO (UPC)