Modern answer for restricting the opening angle of doors manufactured from timber uPVC or aluminium
Slim-line track simply recesses into the top edge of the door leaving only the arm showing when the door is open
The stopped position is adjustable on site to gain maximum opening angle yet stop the door before it fouls obstructions such as projecting sills, opening casements or down pipes
An additional feature is that the friction provided by operating the device can be adjusted helping control larger doors, doors opening in windy / exposed positions; this is a useful feature for special needs or elderly users
Ideal choice for conservatories and external French doors and now commonly fitted as standard by many joinery manufacturers