18x28x1 Exact MERV 13 AC Furnace Filters 6 Pack double-ended Exile is one of the

Exile is one of the few that's both certified organic and registered as a fungicide

The unit is provided with high impedance pH input and can be used with any pH electrode with standard BNC connector

You can also Complete chip & 'T' buds

Strong wire frames

In our opinion

18x28x1 Exact MERV 13 AC Furnace Filters 6 Pack double-ended Exile is one of theNordic 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