This surface mounted restrictor is designed to restrict the window opening to 100mm
Conforms to BS EN 14351:2006 Clause 4.8
Easy to fix to either top or side hung casements and supplied with a choice of packers to suit different window sections including timber, aluminium and UPVC
Constructed from stainless steel and zinc alloy
Additionally this restrictor has a simple key mechanism to allow full opening of the window
Automatically engages and locks when the window shuts