Roof Vent Pipe Boot Base Shape Round Base Material Aluminum Cap/Collar Material EPDM Material Thickness 16 ga For Roof Angle 40 Degrees For Number of Pipes 1 For Maximum Pipe Size 7 1/2 in For Minimum Pipe Size 4 1/4 in Base Diameter 11 in Seal Material EPDM Top Opening Open Application Pipe Vents Product Type Watertight Flashing UV Protected Yes For Roof Type Pitched Standards UPC Maximum Ambient Temperature 302 Degrees F Minimum Temperature 58 Degrees F