Air inlet for livestock buildings JL series

wall-mountedfor ventilation

1.Jjinlong no power ventilation window is made of high quality engineer plastic,good sealing,openand closelexibly,anti-ultraviolet,anti-corrosion,aging resistance,reasonable design and long service. 2.The no power ventilation window is negative pressure type automatic opening window,keepindoor externapressure difference automatically(can open the pressure automatically and adjust freely) and make the outsidelight becomes soft. 3.The material use domestic top-brand,good light transmittance and not deformed easily。 4.The shaft is made of solid stainless steel,open and close stably and easily. 5.The pull open parts can be installed according your need.