Product Name: HEPA Air Purifier in addition to PM2.5 net electrostatic electret cotton Electrostatic electret filter using 3D acupuncture process, less wind resistance, easy to clean. Effectively extend the filter life by three to five times. HEPA filter air purifier all types Suitable for: 2/1 air purifier / air purifier, air conditioning dust, central air conditioning inlet, windows, dust, anti-fog, etc. Color: White Material: Cotton Size: 68x30cm Package Contents: 50 x pcs electrostatic cotton Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.