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21x21x4 Filter Merv 10 Carbon 21x21x4 Filter Merv 10 Carbon
Other MERV Ratings
Protects All Against
Pollen protection
Pollen
Dust protection
Dust
Mold protection
Mold
Dust Mites protection
Dust Mites
Bacteria protection
Bacteria
Pet Dander protection
Pet Dander
Smoke protection
Smoke
Viruses protection
Viruses
Cooking Smoke protection
Cooking
Odor protection
Odor
Cooking Smoke protection
Smog

21x21x4 MERV 10 Carbon Air Filter

AC Furnace Air Filter MERV 10 Carbon 21x21x4-Inches

2032 Reviews

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Product Description

Item Model Number: FKFO21X21X4
Brand: Filter King
Filter size: 21x21x4
Actual Size: 20.5 x 20.5 x 3.75
MERV 10 Carbon
Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Smoke, Odor
Residential / Commercial Use

Manufactured in the US