Having invested a great deal of funds to technology research and product development,HANGZHOU SAFEDOOR AUTOMATION & HARDWARE CO LTD has successfully worked out Aluminum Roller Shutter with Spiral Track. Aluminum Roller Shutter with Spiral Track with reasonable price, excellent performance and excellent quality, it has won wide recognition from customers. Safedoor is a solution for all your buying needs. We can offer you the prices that you need and quality that is good for you.
|Door size (max mm) WxH||8000x9000||8000x9000||3500x3800|
|Door panel thickness (mm)||43||80||23|
|Opening speed (m/s)||0.8-2 (adjustable)|
|Closing speed (m/s)||0.8-2 (adjustable)|
|Wind-resistant||5KPa, 12 grades|