High-efficiency particulate arrestance (HEPA) filter for 6' round duct/flange air intakes Blocks 99.97% of particles at .3 micrometers while providing excellent airflow Features easy-install rubberized collar with steel clamp for a proper seal Recommended for use with high-velocity inline fans / blowers - may create too much restriction for small duct fan types Measures (max): 9.25' long x 8.125' diameter, 6' female flange
Manufacturer: GrowBright
Brand: GrowBright
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