This is a SET of (2) gaskets, the one that goes between the combustion blower housing and the stove and the one that goes between the blower and the housing. Made from 1/8" thick high temp material capable of withstanding temperatures in excess of 2000 degrees F. Used on Breckwell, Whitfield, Quadrafire, Envirofire, and many other stoves.You can also cut the housing gasket down if yours only uses 4 holes instead of 5 like some Quadra-Fire stoves do.