Other
filter grades and styles may be available in this size as a CUSTOM
filter.
18x20x1 Air Filters Available
Superior Filtration
18" x 20" x 1" Air Filter
Pre-Pleat 40 Air Filters: These 18"x20"x1" pleated filters are rated MERV 11 and will capture visible dust and allergens. These are heavy-duty, commercial-grade pleated filters with actual dimensions of 17-1/2" x 19-1/2" x 3/4"
Activated Carbon Air Filters: True MERV 8 filtration with activated carbon to control odors. Individuall wrapped. Actual size is 17-1/2" x 19-1/2" x 3/4"NaturalAire® Air Filters: 18"x20"x1" NaturalAire filters measure 17-7/8"x19-7/8"x3/4" actual and will capture visible dust. These pleated filters are MERV 8 rated and are individually wrapped. THESE FILTERS ARE MADE TO ORDER AND CANNOT BE RETURNED.
Pre-Pleat 40 Air Filters: These 18"x20"x1" pleated filters are rated MERV8 and will capture visible dust. These are heavy-duty, commercial-grade pleated filters with actual dimensions of 17-1/2" x 19-1/2" x 3/4"
Activated Carbon captures visible dust and absorbs many objectionable household odors, including smoking odors. NaturalAire air filters simply and effectively capture particles from the air. PrePleat 40 air filters are a commercial/industrial, heavy-duty air filter. MERV 8 Specifications
Poly Panel air filters are made of polyester filtering
material and will provide the basic essentials of an air filter.
They will protect your heating and cooling equipment. They are
not available in custom sizes.
If you have questions about our 18 x 20 x 1 air filters, please contact us. If you are concerned that a 18x20x1 air filter will not fit your air conditioner, central air system, or furnace; please visit determining your air filter size. If you are looking for a different size furnace or air filter than 18 x 20 x 1; please choose a different size from the chart below.
