The DirectVent Pro 4" x 6-5/8" Galvanized Chimney Liner Termination Kit is a component that is used in a typical venting installation. The chimney liner termination kit includes a termination connector and flashing. DirectVent Pro 4"x6-5/8" termination caps, 3" flex, and co-linear flex connectors are sold separately. The DirectVent Pro chimney liner termination kit must be tested and listed for each appliance. Refer to stove manufacturer's installation instructions.