16x22_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Accessories these stakes are strong

these stakes are strong

0% – Kelp Extract (Ascophyllum nodosum) – (microbe food)

4 Hours of constant use

Link up to 8 units from a single power cord

16x22_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Accessories these stakes are strongNordic Pure Custom MERV 13 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