20x23x1 MERV 13 AC Furnace Filters 6 Pack spl_allstate Boasting a 50% increase in

Boasting a 50% increase in light output and using only 190 watts

Flexible 180 degree movement】Give growers no worries while growing in a humidity environment

clean Golden Yellow product made from pure worm castings and the most potent seabird and bat guanos

Can I use it in clay or sandy soils

Use to trap pollen when using the TTT 3000 pollen net

20x23x1 MERV 13 AC Furnace Filters 6 Pack spl_allstate Boasting a 50% increase inNordic 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