Schiedel Isokern Pumice Chimney Liners are designed to be built into your chimney stack normally under new house construction aswell as relining existing masonry chimneys. These Liners are made from high insulative Pumice which helps with your chimneys performance and efficiency. These liners come in a variaty of sizes from 150mm which is ideal for many stoves upto 600mm internal diameter for specialist flue such as Biomass boilers, or exceptionally large open fires. Isokern also offer stainless steel connections to enable you to go from stainless steel flue pipe to Pumice liner, giving a proper connection for the best installations