15x25x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films “Really impressed with how easy

“Really impressed with how easy this is to use in the field—no mess

Intermatic T104 Timer w/Metal Case (240V)

N to K ratio ideal for full production cycle bloom finisher

Our onsite Carbon Analysis Laboratory allows us batch test

15x25x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films “Really impressed with how easyNordic 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