8_7/8x33_5/8x1 MERV 7 AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs This system focuses 20% more

This system focuses 20% more of the light to the target area than our nearest competitor to enhance the performance of the lamp and maximize plant quality and yield

Use it all season long to prevent and control powdery mildew

non-woven fabric is breathable

Can be applied as a foliar spray or root drench (depending on the disease you're treating)

WARNING Highly Flammable liquid and vapor

8_7/8x33_5/8x1 MERV 7 AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs This system focuses 20% moreNordic 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