Available in both 335mm and 500mm long.
 
Using our innovative arrow-head mechanism this restrictor is designed to operate in a minimum 4mm air gap, and will hold windows and doors open at up to 90°.The 500mm version will hold windows and doors at up to 120° Different positioning of the frame/sash parts will give the required hold position.
 
There is a friction adjustment by means of a "Phillips" screw. 
 
All materials used are durable and non-corrosive. 
Restrictors are available in 430 Stainless Steel as standard.