Joiner
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Z, different systems use different tilt and turn mechanisms. A few might use the same, but you'll still get, say, three different types on five different systems.
See if you can identify the upvc system, or at least get the t&t mech name off it and then ask your local upvc supplier (there are several in Kiddy) if they can identify it, in which case you can then probably get a replacement.
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