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 3 in Base Height 16 in Base Width 12 in Base Diameter Not Applicable Seal Material Rubber Top Opening Open Application Pipe Vents Product Type All-Flash No Calk UV Protected Yes For Roof Type Pitched Standards IAPMO (UPC) NES 653