Thanks @Mastertech59. I am not happy with the hi temp white gasket I am using now. The smoke slightly leaks by. With the one inch Fireblack gasket you have to put two together for the perfect two inch width under the smoke vent. I just don't want to screw it up trying to piece the two one inch halves together. I think one two inch wide piece would be easier. Wonder how hard the Fireblack gasket is to remove! It appears sticky as hell. I may just end up using the red hi temp RTV to seal the damn smoke vents. I am not a good caulker, make a big mess. LOLI haven't ever seen FireBlack available in two inches wide anywhere.