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uPVC Window Handle Replacement Window handles that break can be very annoying, and they may prevent your windows opening. The spindle in the handle is moving but it does not communicate with the roller cam of the window mechanism. This is a straightforward fix. We have a variety of Upvc handles that can be replaced for Espags and cockspurs. These include keys-locking, cranked, or inline. Remove the old handle uPVC windows are a great alternative for those looking to make improvements to their home. They give a beautiful appearance while cutting down