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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
Starting Pulse (Peak KV) - 4 - 5
Why use Duramax 200
Important Note: Almost all furnace air filters have a different Actual Size (the exact dimensions) than Nominal Size (the name)
The Pro Sun Intensity Optic was designed to be the highest intensity optic in the industry
Improved design
20x21_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Dispensary Starting Pulse (Peak KV) -Nordic 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