16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Garden Accessories * 12-15 Celsius temperature drop

* 12-15 Celsius temperature drop

Removable cover for the clear bowl portion of the mixing chamber

you simply increase the amount of Atami Coco during the bloom stage and add PK 13-14 at the onset of flowering

It will not affect overall air flow

16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Garden Accessories * 12-15 Celsius temperature dropNordic 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