12.3 In.H-W Alum/EPDM Roof Vent Pipe Flshng, Base Shape Square, Base Material Aluminum, EPDM, Cap/Collar Material EPDM, Material Thickness 0.1 in, For Roof Angle Not Applicable, For Number of Pipes 1, For Maximum Pipe Size 7 in, For Minimum Pipe Size 4...