Cooca cartridge filters adopt special composite fiber filter paper for air filtration, which has excellent filtering effect, wide pleat design, uniform pleat distance, and large ventilation volume. You can choose PET/cardboard/metal/plastic end caps according to your appplication. Innovative structural design to ensure no leakage of the product. H11-U15 levels can be produced. Customized sizes are acceptable. Contact us for a free consultation with a specialist about your application.