Feature:
Aluminum alloy material.
All the mutil-vane dropping naturally ,aviod the interior and exterior air to exchange
Design for uni-directional and non-return air flow ,
Can adjust the atmospheric pressure automatically, between the indoor and the ourdoor.
square or round shape upon available
Natural anodized aluminum finish or powder coated

Functions: defend watermark, high intensity, light, endurable and water-proof. Special reasonable structure Use: for the automatic exhaust of room with airconditioner in outside wall or the outlet of the air conditioner

Use: for the automatic exhaust of room with airconditioner in outside wall or the outlet of the air conditioner