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– How to measure a security door

Always measure in MM

Important: always measure the door from outside looking in, e.g.: standing outside the house

 

Method

  1. Measuring from an existing screen door: If you have an existing door, and you are happy with the fit then we suggest that you measure this door and use these as finished measurements for your new door.

Lock Height: You can use the existing lock hole cut out if desired; first make sure that the new handle will not interfere with the existing solid door handle. Then measure from the bottom of the existing screen door up to the centre of the existing striker, this will be the centre of the new striker and screen door handle.

 

  1. Measuring for a new security screen door:

Door Height: Measure from top  to bottom  on both sides of your door frame, outside the door looking in. deduct 7 mm from the shortest side and record this measurement. Keeping the sides the same length will allow us to build your door square.

Door Width: Measure the top, middle and bottom of your door frame deduct 7 mm for a single lock and 8 mm for a triple lock from each, record these measurements.

Lock: Stand outside, close the main solid door. Establish whether you want the new lock on the left or right hand side, then if you want the new lock of the security door above the existing door handle or below it.

Lock Above: Measure from the bottom sill to the top of the existing solid door handle and add 125 mm (1.4). This will be the new door handle and tongue height.

Lock Below: Measure from the bottom sill to the bottom of the existing solid door handle and deduct 60 mm (1.5). This will be the new door handle and tongue height.

 

If you have an existing lock hole (1.6) from a previous door and you are confident that this has clearance from the existing lock, based on the Lock Above & Lock Below guidelines, then measure from bottom sill to the centre of the lock hole and deduct 4 mm. This will be the handle height. The centre of the lock tongue is the centre of the handle.