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roshnbeih | dodany 2932 dni 1 godzinę 29 minut temu | () | obserwuj nie obserwuj

A torsion spring counterbalance system includes a couple of firmly hurt up springs on a metal shaft with wire drums at both ends. The whole device mounts on the header wall above the garage door and has three helps: a middle keeping dish with a steel or nylon keeping and two conclusion bearing plates at equally ends. The springs themselves consist of the material cable with a stationary cone at one end and a winding cone at one other end. The fixed cone is attached with the guts showing... więcej...

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