Roof Vent Pipe Boot Base Shape Square Base Material Aluminum Cap/Collar Material EPDM Material Thickness 0.3 in For Roof Angle 30 Degrees 42 Degrees For Number of Pipes 1 For Maximum Pipe Size 2 3/4 in For Minimum Pipe Size 1/4 in Base Height 4 1/2 in Base Width 4 1/2 in Base Diameter Not Applicable Seal Material Silicone Top Opening Closed Application Pipe Vents Product Type Standard Master Flash UV Protected Yes For Roof Type Pitched Standards IAPMO (UPC) Listed