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These blue polypropylene shoe covers protect against dirt
Average flow rate with water (SF Models Only): 50 lph
The Magnum Inverter technology ensures lower operation costs
This reduces application frequency and risk of nutrient burn
Adaptable to All Soil Media Types Stake or rod mount options available
21x23x1 Exact MERV 12 AC Furnace Filters 6 Pack Grow1 5' Steel Stake These blue polypropylene shoe coversNordic Pure MERV 12 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, smoke particles, virus carriers, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different
