8x12x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Reflectors & Grow Lights Humic Acid

Humic Acid

Increases plant yield

Keep from freezing

Clove Bud Oil – Primary contact-kill active ingredient

40 lb Commercial Size – Bulk packaging designed for large-scale operations

8x12x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Reflectors & Grow Lights Humic AcidNordic Pure Custom MERV 14 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