Duplex spring
SKU
9111001858
DoorPro has the facility to produce and assemble duplex springs on request. The duplex springs can be produced for both 1" and 1 1/4" shaft diameters. When using the DoorPro duplex spring system, the inner spring is always 40mm shorter as the outer spring. Please contact us for more information or to place an order.
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Stock: In stock