The Napoleon W573-0012 is for a 24-pack of mill-pac cartridges of hi-temperature sealant. These sealant packs help ensure that Napoleon fireplace venting systems are energy-efficient and reliably installed. Each Napoleon sealant comes in a 10.3 ounce cartridge.For use with Napoleon venting components 10.3 Oz. cartridge (bulk - 24 per carton)Weight: 25
