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Types of UPVC Door Handles It is crucial to select the right replacement handle made of upvc for your home if upvc handles need replacing. Locksmiths can provide and fit high-security uPVC handles with extra security features. The most important measurements are measurement A (known as PZ) and the length of the backplate (measurement F). Check these measurements to ensure that your new uPVC handle will fit. Lever/Lever A lever is a rigid rod that pivots around the point. When you apply a force to the end o