6x20x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Led Water level indicator

Water level indicator

• Anti-slip soft gel handles

Produces more PAR per watt than standard Metal Halide

Its heavy duty pre-galvanized steel construction is lined with high purity European aluminum for years of dependable growing performance

and long lasting

6x20x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Led Water level indicatorNordic Pure Custom MERV 12 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