AC Infinity Pre-Filter Cloth, 4in, 2-Pack

A filter cloth is designed to extend the lifespan of a carbon filter by protecting its charcoal bed from debris. It is a form-fitting sleeve made of polyester to block hair, dust, lint, pollen, and other larger particles. The breathable fabric allows complete air passthrough for proper air filtration and odor control. It is reusable for up to 6 months of continuous use at a time between dusting and machine washing. The size is 6.96 x 9.84 in. and it fits 4-inch Carbon Filters. The thickness is 0.05″ and it has a pre-cut design. The color is black. The product description states that it is a clothed filter designed to lengthen the lifespan of a carbon filter by keeping debris from entering the charcoal bed. Each form-fitting prefilter is made of polyester and is capable of blocking particles like dust, lint, pollen, and hair while allowing complete air passthrough. This ensures that the carbon filter properly traps odors in its activated charcoal and refines the air when used with an inline duct fan. The breathable prefilter cloth is machine washable and long-lasting, reusable up to 6 months.