https://shop.vietphat.com/products/permanent-m-f-al-705x330x22mm-3l
*Panel Filters: Permanent M.F AL 705x330x22mm (3L)
*Media Type: Aluminum
*Frame Material: Aluminum
*Rated Initial Resistance: 18Pa
*Recommended Final Resistance: 250Pa
*Max Operating Temperature: 300ºC
*Size (WxHxD): 705x330x22mm
*Rated Airflow: 2,240CMH