22x24_1/4x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer The HI 97500 features a

The HI 97500 features a low battery indicator and automatic shut-off feature that turns the meter off after 7 minutes of non-use

this double-media half inch air filter is even more effective than a half inch pleated air filter

Lowest height profile DE on the market

This product is not to be cleaned with acetone

Radiant 6 inch Air Cooled Reflector Unit (includes lens)

22x24_1/4x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer The HI 97500 features aNordic Pure Custom MERV 7 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition