More about interlocks on sliding doors

 The purpose of interlocks is to lock the back of the sliding door into the fixed panel simultaneously as the door is closed into the locking position, this ensures that the door is locked on both sides. 

  Frame Interlocks are supplied with all our Sliding Security Screen Doors; Diamond grill doors are not security doors & are supplied with a side bug seal.  

 A frame interlock  is fixed to the back of the sliding door at the point of installation  so as to have it interlock with the receiving interlock which is located on the fixed glass panel. 

 Substitute the frame interlock for a bug seal this will eliminate insects coming from the through the gap between the door & fixed panel - indicate this change when placing your order, frame interlock is supplied with all Security Sliding Doors.

 If your doors do not have a receiving interlocks on the fixed glass panel & you want to install them there are three different size receiving interlock:

• 7 mm
• 3 mm
• Flat interlock

  Contact us to purchase an Interlock.

 If the distance from the centre of the top and bottom track to the face edge of the fixed glass panel is greater than 20 mm then a 7 mm offset interlock is required.

If the distance from the centre of the top and bottom track to the face edge of the fixed glass panel is less than 20 mm and greater than 16 mm then a 3 mm offset interlock is required.

If the distance from the centre of the top and bottom track to the face edge of the fixed glass panel is less than 16 mm then a flat interlock is required.

 Measure from the point where the lock striker will be mounted into the receiving channel to the outside edge of receiving interlock on the fixed glass panel. 

• 3 mm allow no deduction
• 7mm allow no deduction
• Flat interlock  

Contact us to purchase an Interlock.

  When measuring for a flat interlock add 10mm to your initial door width measurement.  The reason for this, is due to the nature of flat interlock there is not  enough room for the frame interlock to go between itself & the fixed glass panel, therefore adding 10mm will allow the frame interlock to locate behind the fixed glass panel to allow room. 

   If there is no receiving interlock and you elect to have a bug seal, measure to the back, glass side of the fixed panel.