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Replacement UPVC Door Handles If you're replacing your handles or want to add a bit of extra security you can find the right handle for your door. Upvc handles are simple to install and conform to the required 92mm centres for multipoint locks. The backplate's fixing centre as well as the keyhole/lever dimensions are the most important measurements. Compare these measurements to your current marks before placing an order. Lever/Pad Lever pad door handles are made up of the lever handl