20x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_jondon 1 / 320 x 288

1 / 320 x 288 x 205

Customized programming allows almost limitless degree of

Operating pressure range is 4

Each shutter vent features rubber pads that repress the sound of slamming louvers while ensuring a complete seal from the outside elements

20x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_jondon 1 / 320 x 288Nordic 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