12x16x1 MERV 13 AC Furnace Filters 12 Pack Water Pumps & Irrigation Supplies When mixing with any phosphorus

When mixing with any phosphorus additives (like Elite 91 FLOWERS)

Blade Length: 13

Peat moss and coconut fiber retain water and nutrients for optimal plant growth

In-ground: natural fibers draw water from surrounding soil pot-in-pot prevents roots from penetrating fabric because it prunes by entrapment rather than air pruning

• Depths: 18" (45cm) and 24" (60cm)

12x16x1 MERV 13 AC Furnace Filters 12 Pack Water Pumps & Irrigation Supplies When mixing with any phosphorusNordic 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