1. panel:       The  out-layer    panel  is  made  of  galvanized  steel  sheet,   among  which  is  evenly  filled  with    polyurethane  foam within reinforcing rib   embossed with wooden grain , colours with customer’s demand  

2 Features of panel:   finger protection（national patent） heat preservation, noiseproof,   corrosion prevention, moisture resist, well airtightness   

3. pattern:       pane, long strip

4. system:         torsional spring balance system

5. panel thickness:           40mm， galvanized steel thickness 0. 3mm 

  cable drum material: precision cast aluminium

6. output  : 500sets per  day.

7. package:     carton box

8. accessories:     with all galvanized steel hardware

9. door opener:   220+_10%Vac , 50HZ, 0. 35KW    character of service :   short time(in 5mimutes)  limit switch : mechanical limite    (MOTOR 700N, 800N, 1000N, 1200N)