20x23x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack growing-accessories • Accurate dual beam CO2

• Accurate dual beam CO2 sensor

ROOT 66 can be applied to soil

antimicrobial filter media

Choose from 45P

Bulk is restricted to a 20 yard minimum

20x23x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack growing-accessories • Accurate dual beam CO2Nordic Pure Custom MERV 10 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