20x23x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack king shredder Input Voltage: 208-240

Input Voltage: 208-240

Reduce the application interval to 3-5 days if insects get out of hand

Improves Air Quality

reliable and versatile: Combo Meter Plus means you will be able to measure more and build a better understanding of your complete growing system

2 Liters (0

20x23x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack king shredder Input Voltage: 208-240Nordic Pure Custom MERV 7 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