ADJUSTABLE VALVE FLAP: Y-branch / T-branch outlet connector diameter is 60mm / 75mm, with adjustable valve flaps to control the air volume as needed.
AIR FLOW CONTROL: Y-branch outlet exhaust connector diameter is 75mm / 3 in, with adjustable valve flaps to control the air volume as needed.
MAIN FUNCTION: T Piece / Y Pieces outlet connector, with this valve you can control which side of the T piece or Y piece gets the hot air, you can also allow one side to get more hot air than the other or none at all.
HIGH QUALITY: With flame retardant materials inside, 3 way air vent outlet will not easy to deform under high temperature, odorless and durable. With 2 close-able open regulating valve.
EASY TO INSTALL: Additional outlet to an existing system, efficient split the flow of warm air from your heater, direct compatible with the old or broken one.