In some circumstances these are required to prevent cold drafts flowing back into the grow room or from odours escaping during periods when the extractor fans are switched off.
Our Back Draft Shutters will fit any make of ducting.
Construction from galvanised steel case featuring a spring loaded aluminium shutter blade.
Specifications
| Manufacturer |
Blauberg |
| Diameter |
25 Cm |
Recensioni per Air Flow valve diam 25cm
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