18x18x1 Pleated MERV 13 Air Filters 24 Pack AIR FILTER BOXES delivering superior drainage and creating

delivering superior drainage and creating a healthier root environment

User-defifined Grow Schedules and Spectrum for Specifific Strain

000 BTU/h cooling capacity

• Unlike coco you need to flush the substrate first time you use it in order to saturate the clay pebbles initially

18x18x1 Pleated MERV 13 Air Filters 24 Pack AIR FILTER BOXES delivering superior drainage and creatingNordic Pure MERV 13 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, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200