18x18x2 Merv 11 Furnace Air Filter

Code: 18182M11

Actual Size:17 1/2 x 17 1/2 x 1 3/4

  • Extends life of HVAC Equipment
  • Protects HVAC Equipment
  • Top Quality
  • All Filters are made to order, please allow up to 7 days for processing.
  • Color of filter may vary from picture




Your HVAC system runs nearly constantly to keep you and your loved ones warm or cool. So, keeping it in your mind, how often should you change your system’s air filter? There’s no strict guideline on when to change your air filter. Essentially, it should be changed when it gets dirty or clogged.

Some homeowners don’t often think about the poor indoor air quality, there are lots of dust and other contaminants present in the indoor air, even more than the outside air. These unwanted particles can cause respiratory illness or can even damage your furnace system. Pull the air filter out now and check whether it is black, dark or dingy? If so, it needs to be changed immediately.

Merv Filters LLC, a leading manufacturer of MERV 8, 11, 13 air filters, providing standard and custom size air filter online in a wide range of sizes with multiple payment options. Our 18x18x2 MERV 11 filter is an ideal choice for residential and commercial applications, eliminating 91% of airborne particle as tiny as 1 micron. Crafted by using electrostatically charged, 100% synthetic material, which is chemical resistant and can withstand harsh conditions.

Important Note: When looking to replace your air filter, make sure you compare its nominal size and actual size. The nominal size that is printed on the side of your air filter is rounded up to the nearest whole inch. For example, if the nominal size of the filter is 18x18x2, the actual size will be 17.5×17.5×1.75

Additional information

Weight 0.50 oz


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