13x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Grow1 5' Steel Stake ebb & flow

ebb & flow

7 for optimal plant performance

you can go back and forth 2-3 times

high and low alarm control lockouts

13x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Grow1 5' Steel Stake ebb & flowNordic 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