GrowBright 4″ Duct Filter Insert
Replacement filter insert for the GrowBright 4″ Duct Filter. Does not include outer filter- sold serperately.
Improve air quality in the grow area with GrowBright duct filters, a simple dust and small particulates filtration elastic cover for air intakes.
• Dust & small particulate filter for 8″ round duct/flange air intakes
• Low restriction dual-layer design
• Outer bug/larger-particle screen layer
• Inner activated-carbon-lined smaller-particulate layer
• Fits over standard 8″ round ducting/duct flanging
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