17x19x1 Exact MERV 13 AC Furnace Filters 12 Pack Trimmers The relative humidity level is

The relative humidity level is displayed in bold on the digital screen for easy readings and quick adjustments

Promotes extensive

Used to turn on equipment from other power circuit

This enables it to grip your ducting with an airtight seal in either a horizontal or vertical orientation

Safe to beneficial or large insects such as bees

17x19x1 Exact MERV 13 AC Furnace Filters 12 Pack Trimmers The relative humidity level isNordic 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