Door lock mechanisms
Identify the gearbox, understand what is normal before fitting, and test the complete lock with the door open.
Product guide
GU Old Style 35 mm gearbox — deadbolt movement and latch reversal
GU Old Style replacement centre case · 35 mm backset · 92 mm PZ · single spindle
Understand the movable deadbolt, reset it after delivery, reverse the spring latch and test the lock with the door open.
Flag hinges
Identify the flag hinge and step height before using fitting or adjustment instructions.
Product guide
Patriot Plus flag hinge — fitting, adjustment and removal
Trojan Patriot Plus · 0785 series · 16 / 19 / 22 mm step heights
Identify the Trojan Patriot Plus 0785-series flag hinge, check its step height and follow the supplied fitting, 3D adjustment, removal and care instructions.
Window hinges
Open a new friction hinge the right way, reset one opened backwards, choose 13mm or 17mm, and fit a replacement pair.
Product guide
Window hinge support
Friction stays · standard, egress and egress easy clean · 13mm or 17mm stack
A new hinge only opens one way. Check the direction before you fit it. Opened one backwards already? It almost certainly just needs resetting.
Window restrictors
Identify the correct restrictor and check the window type before choosing a guide.
Product guide
Res-Lok concealed window restrictor
Res-Lok concealed restrictor · 105 mm arm
Identify the Res-Lok outward-opening casement restrictor, check compatibility, and read the supplied fitting, key-release and maintenance guidance. Match the handed version and window profile before fitting.