Back Draught Shutters | Back Flow Prevention | C02 Aid | 6" / 8" / 10" / 12"

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The spring operated flaps close when there is no positive air movement, preventing air back-flow when fans are turned off.  This will keep light, insects and odors out.

 

 

Galvanized sheet steel Housing 

Aluminum flaps

*When installed, the back draft shutters need to be orientated with the hinge area vertical.

Back Draught Shutter - Benchmark Bioponics
Back Draught Shutters | Back Flow Prevention | C02 Aid | 6" / 8" / 10" / 12" - Benchmark Hydroponics
Back Draught Shutters | Back Flow Prevention | C02 Aid | 6" / 8" / 10" / 12" - Benchmark Hydroponics
Back Draught Shutters | Back Flow Prevention | C02 Aid | 6" / 8" / 10" / 12" - Benchmark Hydroponics