Detach top sash on uPVC window without quick release.

How do I remove the top sash on uPVC Sliding Sash Windows with plant-on sash horns and without quick release?

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Start by sliding up the bottom sash as far as it goes. If you’re facing the internal side, reach under the sash and a use a Don Carlos knife to remove the sash horn board found underneath the top sash. Now release the sash from the brackets by unscrewing the fixing screws as shown in the video. Carefully tilt both sashes towards you and release the top sash from the tilt arms and brackets found on the side of the sash by unscrewing the fixing screws. If you opted for quick release tilt arms, you can use a sharp object to quickly release the tilt arm from the bracket fixed to the sash. Carefully rest the top sash on the bottom sash or better yet ask a friend to hold it for you while you slide the top sash off the brackets.

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