Adopting a brand new design, waterproof and anti-theft, the observation window adopts organic glass to increase safety, easy installation and construction, convenient operation, and user-friendly interface. It is a product with epoch-making significance
Commonly Used Size：
2户：520×350×180
4户：520×480×180
6户：520×600×180
8户：750×600×180
10户：750×730×180
12户：750×850×180
15户：1050×980×180