13x18x1 Exact MERV 7 AC Furnace Filters 6 Pack plant-care/pest-&-disease-control supplying all major NPK with

supplying all major NPK with any complete nutrient system

Double-jacketed CMh lamp does not require reflector safety lens

This microbially active blend was formulated to guarantee vigorous growth

Great for Vegetables

Consisting of a cartridge containing a combination of essential oils and a plug-in sized electronic vaporizer

13x18x1 Exact MERV 7 AC Furnace Filters 6 Pack plant-care/pest-&-disease-control supplying all major NPK withNordic 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