21x27x1 Trane Replacement MERV 12 Plus Carbon AC Furnace Filters 6 Pack loose coco We call this “biological tilling

We call this “biological tilling

The single ended 315-watt CMH grow light can be used as a stand-alone grow light or as supplemental lighting

4-hour REI

It comes equipped with industrial strength aluminum fan blades and operates at three speeds with a smooth side-to-side oscillation

gravel beds

21x27x1 Trane Replacement MERV 12 Plus Carbon AC Furnace Filters 6 Pack loose coco We call this “biological tillingNordic Pure Trane Replacement 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