Product Name: HEPA Air Purifier Filter for PM2.5 and Dust Removal Electrostatic electret filter made with 3D acupuncture technology offers lower wind resistance and improved cleanability. Effectively extends filter life up to three to five times. Compatible with various types of air purifiers, HVAC systems, window units, central air conditioning intakes, and automotive AC systems. Helps capture dust, airborne particles, and reduce fogging. Suitable for use in air purifiers, air conditioners, and ventilation systems. Color: As shown in picture Material: Fiberglass Size: 70 x 30 cm Package Contents: 10 x Air Purifier Filters Note: Light and screen display differences may cause slight variation in color between the image and the actual item. Measurement tolerance: ±1–3 cm.