This heat shield features greater safety by reducing clearance from combustible materials by up to 50%. Adjustable from 22.5" to 42" (57.1 cm to 107 cm) it will adapt to 6", 7", and 8" stovepipe. Includes screws. Tabs at bottom of stove pipe shield can be bent and used as spacers. Easy to install. Eliminates the need for double wall pipe in most installations. ULC listed and labeled.