8.5 In.H-W Alum Roof Vent Pipe Boot, Base Shape Square, Base Material Aluminum, Cap/Collar Material EPDM, Material Thickness 16 ga, For Roof Angle 45 Degrees , For Number of Pipes 1, For Maximum Pipe Size 5 in, For Minimum Pipe Size 1/4 in, Base Height 8 1/2 in, Base Width 8 1/2 in, Seal Material EPDM, Top Opening Closed, Application Pipe Vents, Product Type Flashing, UV Protected Yes, For Roof Type Pitched, Standards UPC, Includes Clips