20x22_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack cube PVC suction tube

PVC suction tube

Soil Activator will solubilize phosphorus and improve micronutrient availability to help boost yields during flowering and fruiting cycles

high-performance operation

Turbulent flow design virtually eliminates clogging

Guard ‘n Spray is an organic

20x22_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack cube PVC suction tubeNordic 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