16_3/8x21_3/8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking Mint Oil – Secondary active

Mint Oil – Secondary active ingredient

For maximum uniformity

Detection - UV / IR / MG / MT

@ 120V = 5

Organic & Conventional Compatible – Approved for use in both certified organic and conventional growing programs

16_3/8x21_3/8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking Mint Oil – Secondary activeNordic 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