15x30_3/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl-athena Try out all three to

Try out all three to find out which setting is best for you

which make plants more tolerant to high nutrient levels and drought

multiple sources of nitrogen and fully chelated micronutrients

The strap can be hung on the wall or used over your shoulder

15x30_3/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl-athena Try out all three toNordic 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