Restricted Friction Stay Hinges

The Restrictor Friction Stay is a robust hinge solution for casement windows, combining ventilation control with structural support. Constructed from high-quality 430 stainless steel, it features an integrated restrictor that limits the initial sash opening to 100mm, in line with BS 8213-1:2004 guidelines for child safety and secure airflow. Available in lengths from 414mm (12") to 616mm (24") and stack heights of 13mm or 16.5mm, it suits top-hung and side-hung configurations on PVCu, aluminium, and timber frames. Friction adjustment allows the window to hold at various positions beyond the restriction, while a pointed sash arm and nylon end cap ensure gasket compression and smooth operation. The anthracite grey end cap adds a subtle aesthetic touch. For enhanced security, compatibility with ERA Hingeguard plates or dog bolts achieves PAS 24 standards, engaging only under force to prevent hinge removal. Tested to 25,000 cycles per BS EN 13126-1:2006 and meeting BS EN 1670 Grade 4 corrosion resistance (240 hours), it supports maximum load capacities in full-size windows. A 10-year mechanical guarantee applies under proper installation and maintenance, with regular cleaning recommended in corrosive environments.