13x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs and enjoy added benefits of

and enjoy added benefits of mycorrhizae (a beneficial fungi species that promotes root growth and enhances fertilizer uptake)

The Gavita Master Controller EL3 is the next generation in our EL controller series

Flea Beetle (Chaetocnema confines)

• Water resistant design

Reduces CO2 emissions by at least two thirds

13x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs and enjoy added benefits ofNordic Pure Custom MERV 14 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