23_3/4x23_3/4x1Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers Good 2 Grow Trays are

Good 2 Grow Trays are designed with an effective grid pattern for superior drainage and root protection

Capacity: 92-277 PPD or 11

PRO-MIX BX is a solution for growers seeking to benefit from both the nutrient retention ability of vermiculite and a perlite content providing limited but proper drainage capacities

The high-carbon steel blade cuts with both a push and a pull

Use OxiPhos throughout the growing season to both prevent and control plant pathogens

23_3/4x23_3/4x1Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack environmental-controllers Good 2 Grow Trays areNordic 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