New product !! Automatic wall mouted ventilation window made in china

Specifications

Characteristics and parameters:
Appearance size:width 600mm,height 320mm,thickness 160mm
High quality plastic,high durability,ageing resistant
Close tightly,open fiexibly ,with nets
In-built polystyrene board(thickness:20mm)
High quality and inexpensive,applicable to standard hens for livestock and poultry.

A. The open-close of air inlet adopt Nylon pulley and rolling friction, the resistance is low, and inner is filled with 20mm Polystyrene to ensure the warm-keeping of the air inlet.
B. A group of air inlet could be opened at three angels which can realize ever ventilation.
C. To realize uniform ventilation, angle of inlet near the fan should be smaller than those far from it.
D. Plastic contains the anti-ultraviolet raw material, making it longevity.
E. The spring of air inlet is stainless steel material, which is durable, rustless and not out of shape, the technics is delicate and ensure to be seamless after closing the air inlet

 1.

Made of excellent engineering plastic under through molding process, larger density make high fastness.

 With adding into uvioresistant material,it's ageing resistance is better,service life is longer;Good seal,easily open and close,with bird protection net in the wind inlet .

 The first one to use pulley gear in the inlet,reduce friction and extend the service life of digging rope.