Material:  
1. High-strength aluminum alloy  skeleton   
 effectively resist to the external force  
The appearance is treated by plastic spray which has the ability  
 of anticorrosive, anti-ageing and maintain the beauty long.  
2.High-quality 100% polyester or acrylic fabric which   
can absorb the untraviolet  
resist to the coldness ,rain and we have all kinds   
of patterns for your choose.  
Function  
Optional of manual and electric motor, also can be used.  
both by manual and electric motor  
  
Specification:  
Min:2.0(width for window bar)*1.5M (the width for  
extended tarpaulin)    
Max:6.0*3.0M  
Aluminum roller:Diameter:70mm,Thinckness:1.2mm  
Alu.front bar:63.5*54*1.5mm  
Alu.Support Arms:60.7*32.4*2.1mm and 53.3*27*1.5mm