Nominal Size: 16 x 25 x 5 H, Actual Size: 15 3/4 x 24 3/4 x 4 3/8 (15.75 x 24.75 x 4.38) Absorbs odors, VOCs and captures airborne particles from your indoor air. Improved pleated media provides 3 times the carbon media vs flat panel carbon filters. No messy, loose carbon particles with our carbon infused media. Made in the USA: Proudly manufactured in the USA, ensuring quality and supporting local production Activated carbon technology helps reduce indoor odors, smoke, and VOCs while capturing dust and allergens for fresher indoor air.