1. ABOUT PRODUCT: This package includes 2 Premium Universal Cut-to-Fit Activated Carbon Pre Filters Pad Compatible with 38002, 10000, 11000, 12000, 13000, 14000, 15000, 17000, 18000, 40000, 50000, and 60000 Series Models. Carbon Pad with microscopic mesh to catch dirt, common household pollutants, and other Odors, leaving only fresh air. The universal cut-to-fit activated carbon pad filter can be trimmed to fit any size filter. 2. DURABLE: Our premium quality activated carbon pad is , with a mesh structure and stretch fabric material that is elastic, strong, and dependable. They can be used for an extended period of time without affecting regular ventilation, maintaining air circulation, and keeping your home clean. 3. HIGH QUALITY: Each activated carbon pad is designed particularly for air vent filters in the home. Air Pad filter is composed of a high polyester electrostatic material that is polyester. It is designed to be used as a register and air duct filter, but it may also be utilized for various other DIY projects. Reduce the number of hazardous air particles by making your entire house smell better. 4. MULTIFUNCTION: The universal carbon pad filter sheets can be applied to most air purifiers, air conditioners, humidifiers, range hood filters, vents, furnace filters, and other appliances, making your home more comfortable and ing you and your family members a ier life.