17x22x1 MERV 8 AC Furnace Filters 6 Pack garden-hygiene-and-safety -Measures 8" H by 9

-Measures 8" H by 9 1/8" L

Use SuperCharge throughout the entire growth cycle and bloom cycle at the rate of 4 ml/gallon for normal plant maintenance

Flow Restrictors limit the flow of liquid in the line

cucumeris when thrips populations are low

17x22x1 MERV 8 AC Furnace Filters 6 Pack garden-hygiene-and-safety -Measures 8" H by 9Nordic Pure MERV 8 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 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters