25x30x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack books-&-videos Derived from a unique blend

Derived from a unique blend of soybean extract and sesame and fish oils

IP67 wash-down rated 1/8 hp motor

With user control and a variety of time saving techniques

Ordering Information HI98100 is supplied with HI1271 pH electrode

All pH probes eventually need to be replaced—they can only house so much reference solution

25x30x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack books-&-videos Derived from a unique blendNordic Pure Custom MERV 10 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