15x30_5/8x1 MERV 7 AC Furnace Filters 6 Pack bio soil Testing for phytotoxicity and compatibility

Testing for phytotoxicity and compatibility is recommended before widespread use on plants or mixing with other products

• Great coverage—up to 13

Many PK boosters add far too much of these elements and create a cascade of problems

Master B – 32oz

Sold in a case of 32

15x30_5/8x1 MERV 7 AC Furnace Filters 6 Pack bio soil Testing for phytotoxicity and compatibilityNordic 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