17x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack nutrients For use with the Hydrologic

For use with the Hydrologic water filtration systems in indoor garden hydroponics

The most stable output frequency of any ballast

Daystar features:

This EnviroKlenz Air System is UL certified and uses hospital-grade technology to guarantee the air in your home or office space stays as clean and pure as possible

The socket is mounted on our exclusive All System cylinder and mounting disc

17x27x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack nutrients For use with the HydrologicNordic 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