No-board Pleated filter cartridge for air conditioning and ventilation We have automatic production line, and we can produce the cartridges with different specifications. If the material is PP, PET, PE, panel height ranges from 8mm to 90mm. For glass-fiber kind of filter cartridges, available sizes are: 25[40], 35[50], 52[70], 63[80], 75[80, 96], 83[96], brackets figure shows the finished product filter thickness. Performance: Odorless, non-toxic, environment friendly, anti-friction features, large surface area, high efficiency, light weight. Application: Air purifier, air cleaner, vacuum air supplied work piece, FFU special air cleaner, electronic medicine aviation etc. Max width: 710mm; indefinite length. OEM orders with customized designs and specifications welcomed