Global Air Supplies Back Draft Dampers will seal the grow room when the fans are off.
Ideal to seal off the outlets, stopping bugs entering and heat escaping. Manufactured from high quality galvanised steel with two spring loaded blades.
Global Air Supplies Back Draft Dampers will seal the grow room when the fans are off.
Ideal to seal off the outlets, stopping bugs entering and heat escaping. Manufactured from high quality galvanised steel with two spring loaded blades.
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