Nordic Pure 20x25x5 (Actual Size: 19 3/4 x 24 3/4 x 4 3/8) Lennox X6673 X6675 Replacement Odor Reduction Merv 8 Filter 4 PK

Important Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size". With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7/8 and 5 1/4 inch depth filters, this is why we ask you to compare the exact dimensions. Nordic Pure 20x25x5 Lennox X6673_X6675 Replacement Pure Carbon Pleated Odor Reduction air filters are what is considered the traditional 5” filter at an actual 4 3/8”. Pure Carbon Pleated Air Filters is made with a durable non-woven polyester base media infused with naturally derived charcoal, created to eliminate odors in your office or home. Our pleated design provides three times as much carbon media per A/C filter but maintains excellent air flow. Our Pure Carbon air filters are manufactured using heavy duty, moisture resistant beverage board frame. There is a metal mesh support grid bonded to the pleats for extra support. These activated carbon, odor eliminator Pure Carbon AC furnace filters can be used in residents as a stand-alone filter. They can also be used as a pre-filter in high-efficiency commercial HVAC units. They remove levels of Volatile Organic Compounds (VOCs) such as chemicals from household cleaning products. For maximum odor control, we recommend you replace your air conditioning filter every 3-6 months.