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Best 4 Inch Furnace Filter Vs 1 Inch

From leading brands and best sellers available on the web.
#1

Winner

OlitAir 20

OlitAir

OlitAir 20x25x1 MERV 13 Air Filter,AC Furnace Air Filter,Reusable ABS Plastic Frame, 7 Pack Replaceable Filter Media (Actual Size: 19 3/4" x 24 3/4" x 3/4")

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#2
Filtrete 1

Filtrete

Filtrete 12x12x1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 11.81x11.81x0.78 in)

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#3
Filtrete M

Filtrete

Filtrete Micro Allergen Defense AC Furnace Air Filter, MPR 1000, 12x 24 x 1-Inches, 4-Pack

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#4
Filtrete 1

Filtrete

Filtrete 16x25x1 AC Furnace Air Filter, MERV 13, MPR 2200, Elite Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 15.69x24.69x0.78 in)

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#5
Filtrete 1

Filtrete

Filtrete 14x24x1 AC Furnace Air Filter, MERV 11, MPR 1000, Micro Allergen Defense, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6 Pack (Actual Size 13.81x23.81x0.81 in)

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Up to 30% off

#6
Filtrete 2

Filtrete

Filtrete 20x24x1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 19.81x23.81x0.78 in)

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#7
Filtrete H

Filtrete

Filtrete Healthy Living Ultra Allergen Reduction AC Furnace Air Filter, MPR 1500, 20 x 20 x 1-Inches, 2-Pack

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#8
Filtrete U

Filtrete

Filtrete Ultrafine Particle Reduction AC Furnace Air Filter, MPR 2800, 14 x 20 x 1-Inches, 2-Pack

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#9
Filtrete 1

Filtrete

Filtrete 14x20x1 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 13.81x19.81x0.78 in)

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#10
Filtrete U

Filtrete

Filtrete Ultrafine Particle Reduction AC Furnace Air Filter, MPR 2800, 20 x 25 x 1-Inches, 2-Pack

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