Against bad smells: Retains harmful gases such as ozone and exhaust fumes whilst neutralizing foul-smelling gases Protects the air conditioner: The filter protects your car's air conditioning system from dust and dirt, helping it to stay cleaner Easy to Replace – Simple installation process to quickly replace old filters, helping you maintain optimal air with minimal effort. Precisely molded to original factory dimensions, the frame's length, width, and thickness match the original car's storage compartment, allowing for direct, non-destructive installation without trimming. Equipped with an activated carbon adsorption layer, it effectively absorbs exhaust odors, plastic odors, and cooking fumes, isolating pungent external exhaust fumes during driving, keeping the interior air fresh and odor-free., Manufacturer: HSYDUHAE