23x25x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays 000 hour life to L70

000 hour life to L70

The system blocks light and keeps the top of your medium moist for a more even dry down

which is the perfect amount to stick 50 cuttings

Root mass was noticeably larger and plants handled stress much better than previous runs

Both active processes kill eggs

23x25x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays 000 hour life to L70Nordic Pure Custom MERV 12 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