Dektite Flexible Roofing Pipe Flashing Retrofit Split Zipper BootsMany sizes to fit your pipe size. Boot Size Fits Pipe Outside Diameter Pipe Boot Base Diameter #1 3 4" 2 3 4" 6 1 4" #2 2" 7" 10 3 4" #3 3 1 4" 10" 14 1 2" Embedded Clips to Secure the Boot Seam. High quality EPDM rubber material. Withstands temperatures to 239 F. Easy to install around a pipe or electrical service pole or conduit with easy to read dimensions for cut lines. Seals on uneven metal roofs. Flexible aluminum collar base that won't break.