13x24x1 Exact MERV 7 AC Furnace Filters 6 Pack Extension Pressing either the probe icon

Pressing either the probe icon in the Hanna Lab App or button on the HALO pH probe will tag sample data for easy reference

Best of all

Waterproof housing

Seawead extracts in Alg·A·Mic™

13x24x1 Exact MERV 7 AC Furnace Filters 6 Pack Extension Pressing either the probe iconNordic 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