Dektite Red High Temp Silicone Zipper Combo Square Base - Retrofit Metal Roofing Pipe Flashing BootsMany sizes to fit your pipe size. Boot Size Fits Pipe Outside Diameter Pipe Boot Base Size #1 1 4" 2 1 2" 5 1 2" #2 1 1 2" 3" 7" #3 1 4" 4" 8 1 2" #4 3" 6 1 4" 11" #5 4 1 4" 7 1 2" 14 1 4" #6 5" 9" 14 1 4" #7 6" 11" 17 3 4" #8 7" 13" 17 3 4" #9 10" 19" 27 3 4" Perfect for electrical power poles on metal roofs. Dektite Retrofit pipe flashings enable you to easily wrap the boot around an existing structure to waterproof it. High temp red boots are for