1. Spring box are used for the Rolling Shutter Door, like Garage Door .
2. Made of general Q235 steel plate give to quality and durability.
3. Surface alvanized in silvery , which make the wheels perfectly resistant to fight against rust.
4. We also supply hooks which used for the Spring Box
|Outer Diameter 180mm(7″)
|Inner Diameter 43.5mm(1.25″)
|Edge Thickness 28mm
|Stock Thickness 1.0mm/1.2mm
|N.W 465 g
|Packing Weight 14.1 KG
|Packing Size 55*36*20Cm|
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