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10 Best filtrete 18x20x1 air filters of 2026
Explore top picks
Best Choice1
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6 Pack (Actual Size 17.81x19.81x0.81 in)
Key specs-
size:18x20x1
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material:Pleated Paper
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usage:FOR RESIDENTIAL use only
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merv:11
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dimensions:19.81 x 0.81 x 17.81 inches
9.9Exceptional
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Value for Money2
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6 Pack (Actual Size 17.81x19.81x0.81 in)
Key specs-
size:18x20x1
-
material:Pleated Paper
-
usage:FOR RESIDENTIAL use only
-
merv:11
-
dimensions:19.81 x 0.81 x 17.81 inches
9.8Exceptional
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3
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 17.81 x 19.81 x 0.81 in)
9.5Excellent
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4
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4 Pack (Actual Size 17.81 x 19.81 x 0.81 in)
9.2Excellent
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5
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 17.81x19.81x0.81 in)
9.1Excellent
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6
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 17.81x19.81x0.81 in)
9.0Excellent
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7
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MPR 700, MERV 8, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 17.81 x 19.81 x 0.81 in)
8.8Very Good
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8
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MPR 700, MERV 8, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 17.81 x 19.81 x 0.81 in)
8.6Very Good
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9
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MPR 700, MERV 8, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack (Actual Size 17.81 x 19.81 x 0.81 in)
8.3Good
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10
FiltreteFiltrete 18x20x1 AC Furnace Air Filter, MPR 700, MERV 8, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack (Actual Size 17.81 x 19.81 x 0.81 in)
8.0Good
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