€¢ Easy to close snap-lock system €¢ Crimped end should be oriented toward the stove to allow for condensation and creosote to flow down inside the pipe used to connect woodstove to entrance of chimney >> Easy to close snap-lock system. Crimped end should be oriented toward the stove to allow for condensation and creosote to flow down inside the pipe used to connect woodstove to entrance of chimney."