Cut-to-fit activated charcoal filter sheet, 16 x 48 inch material, thin 1/16 inch thickness. This product is thin by design. Its purpose is to take out large particulates and eliminate odors but still provide a large amount of airflow through the product, otherwise the performance will suffer, and there is a risk of burning out the unit. This can be cut to fit air purifiers, range hoods, register vents and furnace filters. Proudly made in the USA. Beware of filters made outside of the USA, which are sometimes spray painted and that have no carbon added and no odor elimination capabilities. We use a water based adhesive to attach carbon to our filter material. Our adhesive evaporates out of the product. Our competitors use a chemical adhesive which makes it cheaper, but it gives off a lot of VOCs. Since these type filters are designed to absorb VOC's, their method renders the products useless. Our quality standards are top of the industry.