Dektite Premium #4 Red Silicone Metal Roof Pipe Flashing, High Temp, Square Base, Pipe OD 3" to 7" #4 RED Dektite SQUARE Base High Temp Flexible Roof Pipe Boot Flashing. Base is 11" X 11". Red Silicone Boot with Flexible Base (Aluminum Collar). Pipe Boot Fits 3" to 7" Pipe OD. Continuous Service Temperature Ranges of -58F to +392F. On Site Customizable Pipe Boot. This Pipe Flashing Boot Made By Deks is Made of Silicone for Long Life Even at Extreme Temperatures Dektite Base Seals Against Uneven Metal Roofing with Ease. Pipe Flashing Will Not Break or Crack.