15x23x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack timers-and-instruments inorganic materials

inorganic materials

Depending on the size of your cartridge

provide further protection from theft and tampering

and the 25μ Pressing Screen

secure installation and removal

15x23x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack timers-and-instruments inorganic materialsNordic Pure Custom MERV 13 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