20x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack rock-bottom Cloth junction providing a larger

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

All of the roots organics guanos are carefully sourced for quality and harvested with bat friendly methods so you and your garden get performance with principles

• Automatically controls pH direction up or down

Available Phosphate (P2O5)………

Reverse Osmosis “RO” or deionized water is not recommended

20x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack rock-bottom Cloth junction providing a largerNordic 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