Back Draught Shutter
Used to prevent “blow-back” and pest intrusion when fans are switched off.
Seal your grow room when your fans are off. Ideal to seal off your outlet, stopping bugs entering and heat escaping. Manufactured from high quality galvanised steel with two spring loaded blades.
100mm/4", 125mm/5", 150mm/6", 200mm/8", 250mm/10", 315mm/12"
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