HFL901
- Air flap structure is optimized by aerodynamic and pressure value is higher.
- Protection grade can reach as high as IP 55.
- The sealing ring is using imported polyurethane material, which can last more than 10 years.
- The flame retardant products use ASA engineering plastics which is flame retardant and also anti-ultraviolet, anti-aging and not easy to change color.
- Certified industrial filter mats is used.