18 x 24 x 4 Air and Furnace Filters

This filter size is available in SC80, SC60, SC40, Baking Soda and Activated Carbon.   Available MERV ratings are MERV 13, MERV 11, MERV 8, MERV 8 - Baking Soda and MERV 8 - Carbon.   Features and particles that apply to the listing below include Auto Emissions, Bacteria, Dander, Dust Mite Debris, Equipment Protection, Lint/Heavy Dust, Mild Odors, Mold Spores, Pollen, Pollution, Settling/Average Dust, Severe Odors, Sub-Pollen Particles, Suspended/Fine Dust, Tobacco Smoke Odor, Tobacco Smoke Particles and Viruses.  Click on "Details" next to the filter brand for complete information regarding that brand.

Click here to view the Filter Comparison Chart

Enter a Quantity and click the "Buy" button.

DetailsBrand / Actual SizeMERVPrice / Filter# FiltersPrice / CaseCases
SC80
17‑3/8" x 23‑3/8" x 3‑3/4"MERV 13$19.003$57.00 
DetailsBrand / Actual SizeMERVPrice / Filter# FiltersPrice / CaseCases
SC60
17‑3/8" x 23‑3/8" x 3‑3/4"MERV 11$15.803$47.40 
DetailsBrand / Actual SizeMERVPrice / Filter# FiltersPrice / CaseCases
SC40
17‑3/8" x 23‑3/8" x 3‑3/4"MERV 8$14.803$44.40 
DetailsBrand / Actual SizeMERVPrice / Filter# FiltersPrice / CaseCases
Baking Soda
17‑3/8" x 23‑3/8" x 3‑3/4"MERV 8 - Baking Soda$15.303$45.90 
DetailsBrand / Actual SizeMERVPrice / Filter# FiltersPrice / CaseCases
Activated Carbon
17‑3/8" x 23‑3/8" x 3‑3/4"MERV 8 - Carbon$22.003$66.00 
Advanced Search
Searching By Size: Choose a Size: By Keyword  
*