18x25x1 Merv 11 Furnace Air Filter

Code: 18251M11

Actual Size:17 1/2 x 24 1/2 x 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




A dirty, clogged air filter causes your air conditioner or furnace to stop cooling or heating. Also, your system works hard and energy consumption is more, therefore monthly energy bills are high. Most of the manufacturers recommend changing the air filter every month or 60-90 days for better indoor air quality and better efficiency of your system. Merv Filters LLC offers a wide selection of furnace filters in both standard and custom sizes of MERV 8, 11, 13 ratings.

The electrostatically charged, 18x25x1 MERV 11 furnace filters are ideal to use for allergy sufferers, eliminating 91% of airborne particles such as pollen, dust, dust mites, mold, auto exhaust, and pet dander. This filter media does not absorb moisture, resistant to various chemicals and bonded to corrosion resistant metal grids for extra support. All our air filters are proudly made in the USA and delivered to you in a pack of 4, 6, 12 filters.

Consider purchasing online from the manufacturer directly for special offers on bulk orders. If you have any question, feel free to contact our friendly support team.

Important Note: When you search for 18x25x1 MERV 11 air filter, make sure you measure your filter dimensions to find the right size filter. The filter size labeled on the packages is the ‘nominal’ size, which is a bit greater than the actual size. Example, if the ‘nominal’ size of the filter is 18x25x1, then the ‘actual’ size is 17.5×24.5×0.75

Additional information

Weight 0.50 oz


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