15x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Monitors & Timers At a dilution ratio as

At a dilution ratio as small as 1:1000

Increases resin production by weight during late flowering

With the Grow Flow’s easy-to-program controller unit

corded 6-ft power adapter

BAFLTEXT5 - Weiland quick disconnect power cord

15x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Monitors & Timers At a dilution ratio asNordic 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