I have opened the plastic packaging, but I am selling this because I purchased the wrong size. Please make sure to check the compatible models! Brand: iSingo Material: Polypropylene Product Dimensions: 37 cm length x 1 cm width x 3.2 cm thickness Compatible Devices: Air Purifier EU Spare Part Availability Period: 10 years Item Weight: 0.71 kilograms 【Compatible Models】KC-B50-B, KC-B50-W, KC-50E9-B, KC-50E9-W, KC-500Y5-B, KC-500Y5-W 【Model Numbers】Dust Collection Filter: FZ-BX50HF. Deodorizing Filter: FZ-B50DF. Materials: Polypropylene, Polyethylene, Activated Carbon. 【Functions】The FZ-BX50HF dust collection filter captures pollen, allergens, mold spores, dust, pet hair, etc. The FZ-B50DF deodorizing filter uses high-quality activated carbon to effectively remove odors such as toilet odors, garbage odors, pet odors, and cigarette smoke.