Friction Hinges

 Length: 8 in, 10 in, 12 in, 16 in, 20 in, 24 in

 Stack Height: 13 mm, 17 mm

 Track Width: 15 mm, 16 mm, 18 mm

 These are sold as a pair due to there being two hinges per upvc window.

There have been many different makes and models of friction stay UPVC window hinges but as long as the replacement pair is of the same length, track width and stack height as the originals then they will suit the window to be repaired.