SN-4 Side Wall Air Inlet 

SN-4 Side Wall Air Inlet ● Made by selected good PS engineering plastics with quantitative anti-aging agent, has a better performance of anti-aging and a longer service life. ● There is special structure design in upper inlet ridge and upper inlet door, then air inlet is more close after close. ● Adopts enhanced bird grid design and fixed by traditional buckle groove, more durable in usage. ● Reset spring and pulley bracket all use stainless steel, which is not rusting and a