20x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack lighting_accessories up to 120 pints (80°F

up to 120 pints (80°F

The auto off feature can be disabled

Sour-Dee provides organic carbohydrates and electrolyes to stimulate amino acid production and provide a superior carbohydrate source

but in a controlled garden environment this key element is often missing

The compressed blocks once hydrated fill the fabric pot and becomes a ready-to-use cube

20x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack lighting_accessories up to 120 pints (80°FNordic 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