These replacement mask filters from Dr Jon offer five layers of filtering protection. Each filter is crafted with several layers of support that contain activated carbon, melt blown cloth, filter cloth, and non-woven fabrics. Filters can be used for up to seven continuous days. Designed to protect from allergens, dust, pollution, smoke, and exhaust.
Filter Dimensions: 4.75" (Wide) x 3.22" (High)
** Face Masks and Filters are Non-Refundable **