1. Secure the restrictor safety catch arm assembly to the sash using the same location groove as the friction hinge. Ensure the hook is facing towards you.

2. Position the striker assembly on the frame as shown, using the same location groove as the friction hinge channel. Ensure that the striker pin engages properly in the hook feature when the window is closed then reopened.

3. Check that the window opening does not exceed 100mm maximum. If a smaller opening is required position the catch and striker further away from the friction hinge. For a larger opening position the catch and striker closer to the friction hinge. Always ensure that the catch assembly does not foul the friction hinge upon closing.

NOTE : 100mm maximum opening must not be exceeded.