12_1/8x15x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Pumps & Irrigation Since these are optimal conditions

Since these are optimal conditions

and one thermal probe port

The dispenser also has three programmable spray intervals

Please Note: The AS-2 requires the SPH-1 for supplemental power

12_1/8x15x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Pumps & Irrigation Since these are optimal conditionsNordic Pure Custom MERV 8 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