Roof Vent Pipe Boot Base Shape Square Base Material Aluminum Cap/Collar Material EPDM Material Thickness 0.3 in For Roof Angle 22 Degrees For Number of Pipes 1 For Maximum Pipe Size 1 in For Minimum Pipe Size 0 in Base Height 2 1/4 in Base Width 2 1/4 in Base Diameter Not Applicable Seal Material Silicone Top Opening Closed Application Pipe Vents Product Type Standard Mini Master Flash UV Protected Yes For Roof Type Pitched Standards IAPMO (UPC) Listed