14x22x1 Exact MERV 13 AC Furnace Filters 12 Pack Monterey Lawn & Garden Products Includes: pH 7 & pH

Includes:  pH 7 & pH 4 calibration solution (50ml bottle each)

This blend promotes strong

The USB plug can be plugged into the USB ports found behind popular electronics such as receivers and video game consoles

PRO-MIX BX is a solution for growers seeking to benefit from both the nutrient retention ability of vermiculite and a perlite content providing limited but proper drainage capacities

5" filter housing - grey/black cap - 1" ports

14x22x1 Exact MERV 13 AC Furnace Filters 12 Pack Monterey Lawn & Garden Products Includes: pH 7 & pHNordic 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