DEKSDektite Premium 3 Red Silicone Metal Roof Pipe Flashing, High Temp, Square Base, Pipe OD 1/4" to 5"

Was just right for the job

Best price out there! A bit tricky to cut but just go slow and use a sharp utility blade! Used for my ice shack chimney and have had no issues all winter. I did make it double walled so it wouldn’t get too hot.

The flange is very malleable. Which is good because it will confirm to any shape of surface. The silicone is very thick. It's very well made

Easy to install, would highly recommend this high temperature boot for exhaust roof or wall installations

Love this unit. Installed it the day we got it and it was super easy to install. Doesn’t come with instructions so if you need help just YouTube it. A must buy!