17x22x1 MERV 13 AC Furnace Filters 12 Pack chillers-heaters-and-purification Outside Diameter: 31 cm /

Outside Diameter: 31 cm / 12

LIFE Cloning Gel also gives your plants a shot of Vitamin B1 to boost their resistance to stress and shock factors

thick plastic coating renders them weather

Gold Label HydroCoco 60/40 is a mix of 60% Gold Label Hydrocorn (clay pebbles) and 40% Coco

Also Contains non plant food ingredient: Kelp

17x22x1 MERV 13 AC Furnace Filters 12 Pack chillers-heaters-and-purification Outside Diameter: 31 cm /Nordic 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