Roof Vent Pipe Flashing Base Shape Rectangular Base Material Thermoplastic Cap/Collar Material Rubber Material Thickness Not Applicable For Roof Angle 45 Degrees For Number of Pipes 1 For Maximum Pipe Size 4 in For Minimum Pipe Size 4 in Base Height 16 in Base Width 12 in Base Diameter Not Applicable Seal Material Thermoplastic Top Opening Open Application Pipe Vents Product Type No Calk UV Protected Yes For Roof Type Pitched Standards IAPMO (UPC) NES 653