Q-Line Concealed Restrictor For Windows and Doors

SKU: 188 Categories: ,


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The Q-Line concealed restrictor restricts the opening position of a small window or a door. Available in various lengths and is suitable for aluminium, UPVC and timber frames. The restrictor is permanently fixed and is fitted concealed along the top of the frame. An ideal choice for conservatories and external French doors and now commonly fitted as standard by many joinery manufacturers.

The stopped position is adjustable on site to gain maximum opening angle, yet stops 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 or exposed positions. This is a useful feature for special needs or elderly users.

Q-Line Concealed Restrictor Features

  • Available in 5 sizes: 150mm, 255mm, 365mm (standard or slimline), 455mm & 505mm
  • Modern solution for restricting the opening angle of timber, UPVC or aluminium doors
  • Slim-line track simply recesses into the top edge of the door leaving only the arm showing when the door is open
  • Adjustable stop position
  • Adjustable friction stay
  • Ideal for use in conservatories & external French doors

Additional information

Weight 2.000 kg



150mm Long, 255mm Long, 365mm Long, 455mm Long, 505mm Long


150mm long, 255mm long, 365mm long (standard), 365mm long (slimline 15mm wide), 455mm long, 505mm long

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