18x20x1 Merv 11 Furnace Air Filter

Code: N/A

Actual Size:17 1/2 x 19 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


In Stock


A clogged air filter in your heating and cooling system can end up causing damage to your system. So, make sure you keep replacing the air filter on a regular basis and make your indoor air free of debris. Merv Filters LLC offers furnace filters in a variety of sizes with MERV 8, 11, 13 ratings. We deliver furnace filters in a pack of 4, 6, 12 filters. Our pleated filters are easy to install, improves indoor air quality more efficiently than traditional filters.

Our 18x20x1 MERV 11 furnace filters are proudly made in the USA, constructed by using electrostatically charged, synthetic graduated density filter media that are capable of removing 91% of airborne particles and can withstand in harsh conditions. Our pleat technology allows air-handling units to stay cleaner and run more efficiently by providing less air flow resistance that leads to less pressure drop.

Normally, 18x20x1 MERV 11 filters are designed to last for 90 days, Merv Filters LLC recommends you change the air filter every month or 60 days if you are living near industrial sites or have pets or kids in your family. Order online in bulk directly from manufacturers and get special offers. For product related query, talk to our friendly filtration expert.

Important Note: When it comes to purchasing 18x20x1 MERV 11 air filter, make sure you find the correct size filter. The size labeled on the box of the filter is nominal size, which is slightly greater than the actual size in terms of inches. For example, if the ‘nominal’ size of the filter is 18x20x1, then the ‘actual’ size is 17.5×19.5×0.75

Additional information

Weight 0.50 oz


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