20x28x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack dupe visible results within 4–5 days

visible results within 4–5 days

It is nitrogen-filled with a quartz glass outer jacket for perfect optical quality

The iLogic™6 UV+Far-Red fills the spectral gap that has persisted between legacy lighting technologies and LED

Size Universal Pack Type Bulk Sterile No Color White / Blue Material Polypropylene Seam Style N/A Closure Type Latex Free Elastic Country of Origin CN

20x28x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack dupe visible results within 4–5 daysNordic Pure Custom MERV 8 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