Sfogo dell'aria FC-4 per la casa del pollo dell'azienda avicola, Cina FC-4 aria aria inspirante per la casa del pollo dell'azienda avicola Produttori, fornitori, fabbrica-Shandong Yuyun Sanhe Machinery Co., Ltd

High quality PS engineering plastic plus a certain amount of anti-aging agent, strong anti-aging and long service life.
Special design for the air inlet top and edge for better sealing when it is closed.
Reset spring and pulley support are stainless steel for longer service life. Special designed pull rod pulley in which the steel wire rope or connecting rod can be put ensures flexible open and easy installation.
Light trap can be offered as request and is connected by bolts for easy installation and less cost.
Air guide plate can be offered as requests which can be adjusted angle according to the window size.