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.

• Handed friction stay
• Designed for consistent reliability and accuracy of closure
• Easy Fit and Fully Adjustable
• Choice of Channel widths and Stack Heights
• Lifetime tested to 30,000 cycles
• Verton end cap for improved strength
• Waterproof lubricant on all pivots ensures smoth action
• length:8,10,12,14,16,18,20,22 inches and so on
• 
  bar thickness:2.0,2.5,3.0mm
  width:14, 18, 22mm
  material:SS202, SS301 OR SS304

• OEM welcome

l Adjust the opening angle by the small sliding sheet in the bottom groove to a fixed place.

l Good-quality stainless steel material.

l Regarded regular usage after strictly 50000 times open-and-close test.

l Get to the national standard of QB/T3888 Window-and-Door Sliding hinge.

l Be suitable for U-PVC, Aluminum and Wooden casement windows.

l Material -- Stainless steel 301. But stainless steel 316, 304, 201, 202 are alternative.

l Thickness of the four bars – 2.0-0.2mm, 2.5-0.2mm, and 3.0-0.3 mm.