| Size |
4" – 100mm, 6" – 150mm |
|---|
Back Draft Damper/Shutter
£9.50 – £13.00
Back draft damper to 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.
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Ducting Reducers
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We at Greendaze hydroponics recommend two ONA blocks as a minimum.
**ONA Blocks NOT included**
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