20x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack rock-bottom • Automatically controls pH direction

• Automatically controls pH direction up or down

Cloth junction providing a larger surface area than a standard ceramic junction

which allows the plant to maintain fullu-accelerated growth patterns

The Uvonair is ideal for homes

This Product Controls These Pests or Diseases: Slugs

20x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack rock-bottom • Automatically controls pH directionNordic 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