China Air Filter Pre-Filter with Frame

Disposable primary-efficiency pleated panel filter with paper frame is normally used at the front air intake of ventilation and filtering system of air-condition unit to remove visible particles in the air and prevent the rear end of the filter from being damaged by mosquitoes, flier or and dust.
It has the following advantages:
Large airflow
Low drag force
Low cost
Disposable and easy to handle
No contamination to the environment.