Looking to keep your indoor air clean and fresh? Look no further than our PM2.5 in-line duct Filter Box with Carbon & Hepa Filter! As a factory, we take pride in creating high-quality products that help improve the health and wellness of our customers. Our filter box utilizes a powerful combination of carbon and HEPA filters to capture harmful particles and allergens, leaving you with cleaner, healthier air to breathe. The in-line duct design makes installation simple, while the durable construction ensures long-lasting performance. Say goodbye to indoor air pollution and hello to a healthier home or workspace with our PM2.5 in-line duct Filter Box with Carbon & Hepa Filter.