This activated carbon philtre media bulk roll is an essential component for mask replacement cartridges, masks and respirators, and personal protective equipment (PPE). With a size of 23.5″ x 100′ x 1/4″ and a thickness of 1/4, it is suitable for a variety of facilities and industries. The philtre media is made of high-quality carbon and is designed to remove impurities and contaminants from air and water. Its black color and model number CR24100.25 make it a reliable and efficient choice for mask replacement cartridges. This product is manufactured in the United States and comes in a unit quantity of 1 roll.