Chimney Caps for Pipes - Will fit any Brand Chimney

Measure the inside pipe diameter to determine your correct size. For example, if the inside pipe diameter is 6" order the 6" cap. This size cap will have a 6" diameter INSIDE collar which will push down inside the pipe.
The 5" - 8" caps have an outside bottom collar diameter of 13" and the 9" - 12" round caps have an outside bottom collar diameter of 17". It does not matter if the outside collar is larger than the diameter of your pipe - it just needs to cover the pipe. This bottom collar is what pushes down onto the top of the chimney pipe as you are sliding the inside collar into the inner pipe of the chimney. These caps come fully assembled and ready to install.
The AIR INSULATED 6" - 10" round caps have an outside collar diameter of 16". The 11" -14" round caps have an outside collar diameter of 19" and are custom made and are not returnable .