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Four way dimming feature 60%
Remote (detached) use of reflectors with Phantom ballasts from the PHB4010 line should only be done with Hydrofarm brand reflectors having a built-in 15' cord
-47''H x 24''W x 2
Propagation: Mix 2 ml per gallon in non-chlorinated water
Increases oxygen and nutrient availability in growing media
13x25x1 MERV 7 AC Furnace Filters 12 Pack Bio-Fertilizer Four way dimming feature 60%Nordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters