BDM Dalsin Line 4" x 10ft Pro-Form Aluminum Flex Extension h15.38 Galvanized / Black Applications Direct

Galvanized / Black Applications Direct vent gas

allowing the fan to use only the energy required to maintain the desired volume of airflow (fan speed)

This gas vent increaser allows you to adapt 3" diameter pipe to 4" diameter pipe when required for your application

effectively hiding the pipes and tubes that are often visible in gas fireplaces and fire pits

Variable Speed Blower

BDM Dalsin Line 4" x 10ft Pro-Form Aluminum Flex Extension h15.38 Galvanized / Black Applications Direct"Dalsin Line Aluminum Flex Liners are used for venting category 1 heating appliances or direct vent appliances into a masonry chimney. Manufactured using Type 3003 aluminum, this heavy duty 2 ply liner is made from two strips of . 005, high grade aluminum for a total thickness of . 010" Features Liner is made from 2 ply of . 005" thick type 3003 aluminum strip Components are made from . 020 thick type 3003 aluminum Locking seam on liner is the