Roof Vent Pipe Boot Base Shape Square Base Material Aluminum Cap/Collar Material EPDM Material Thickness 0.3 in For Roof Angle 22 Degrees 45 Degrees For Number of Pipes 1 For Maximum Pipe Size 28 1/2 in For Minimum Pipe Size 12 in Base Height 34 in Base Width 34 in Base Diameter Not Applicable Seal Material Silicone Top Opening Open Application Pipe Vents Product Type Standard Master Flash UV Protected Yes For Roof Type Pitched Standards IAPMO (UPC) Listed