Backdraft Gravity Shutter Damper 200mm - ABS Plastic

Prevent backdrafts when your ventilation system is turned off. Backdraft dampers are used to let air flow out of it, when the air flow stops gravity takes over and the backdraft damper closes and will prevent contaminated air filtering back through it. Can be used on heat exchangers, grow rooms and any ventilation exhaust system. Can be installed in either a horizontal or vertical position with minimal leakage.

• 200mm gravity butterfly backdraft damper
• ABS Plastic finish for durability and long lasting use