11 1/4x11 1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack AC / Dehumidification / Humidification The lid has alpha numeric

The lid has alpha numeric symbols formed directly into the plastic

Now backed by Hydrofarm

Waterproof and extremely insulating

Each unit has a user-friendly temperature system

Extra Barrel Plunger Gasket included

11 1/4x11 1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack AC / Dehumidification / Humidification The lid has alpha numericNordic Pure MERV 7 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 and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters