Made in USA 20 x 20 x 4″, MERV 11, 60 to 65% Efficiency, Wireless Pleated…
Made in USA 20″ Noml Height x 20″ Noml Width x 4″ Noml Depth, 60 to 65% Capture Efficiency, Wireless Pleated Air Filter MERV 11, Microfiberglass Paper, Integrated Beverage Board Frame, 500 Max FPM, 1,400 CFM, For Any Unit
Filtrete 20X20X4 Ac Furnace Air Filter Mpr 1000 Merv 11 Fits Honeywell Allergen
Fits systems calling for a filter thickness of 4.31″ and larger.
Nordic Pure 20X20X4 Actual Size 19 1/2 X 19 1/2 X 3 5/8 Pure Carbon Pleated
Important Note: Almost ALL furnace filters have a different “actual size” than the nominal size printed on the air filter. With the 4″ and 5″ air filters there is a wider variance between the nominal and actual size depending on the manufacturer.
Made in USA 20″ x 20″ x 4″, 80 to 85% Efficiency, Wire-Backed Pleated Air Fil…
Made in USA 20″ Noml Height x 20″ Noml Width x 4″ Noml Depth, 80 to 85% Capture Efficiency, Wire-Backed Pleated Air Filter MERV 13, Synthetic, Integrated Beverage Board Frame, 500 Max FPM, 1,400 CFM, For Any Unit
Carrier/Bryant Filter Cart 2 Pack AC/Furnace Filter Merv 8 20x20x4 FILXXFNC0021
FILXXFNC0021.
Camfil Aeropleat III 20x20x4 MERV 8 Air Filters 059413003 Case of 6
New Camfil Aeropleat III pleated air filters in sealed box. This listing includes 1 case of 6 filters, size 20x20x4, MERV Rating 8, ideal for HVAC systems. Perfect for improving air quality.