8_7/8x19_1/8x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts One bag of VermiBlend amends

One bag of VermiBlend amends up to 5 cubic feet of potting soil

10" unit with one corona discharge cell

Ensures smooth professional cuts

Sachet Strips – Place strips within crop canopy along rows to reduce labor costs in large growing areas

8_7/8x19_1/8x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Grow Light Ballasts One bag of VermiBlend amendsNordic Pure Custom MERV 8 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