Secondary Security

With a unique range of secondary security devices, INTERLOCK® products are designed to fit a variety of window and door applications and may also be retro-fitted.

  • A security device for use with standard hinged, inward opening swing doors
  • Designed for residential or hotel applications, Securichain enables safe viewing before greeting visitors
  • Easy to install, simple to use
Patio Bolts
  • Deadlocking heavy gauge bolt for use with sliding or hinged doors
  • Available in three sizes
  • Designed for wood, vinyl or aluminum applications
  • Shoot bolt secured in place but can be removed if required
  • Three-pin or five-pin compatible high security key locking
  • Easy to install
Flush Bolts
  • 7 mm (1/4”) diameter plated steel rod activated by a die-cast zinc body and operating lever with comfortable finger grip
  • Surface-mounted model with standard width face plate, can be mounted either on the face or on the leading edge of a door stile
  • Surface-mounted narrow face plate is suitable for bi-fold windows as well as doors
  • Recessed model has a shorter overall length and is recessed into a door stile to give a smooth, flush appearance
  • Sizes and types to suit both doors and windows