Window Mechanism Measuring guide
Changing a window mechanism is quite easy. The hardest bit is Identifying the correct one
Step1: Remove lock from the frame
Hold the strip horizontally (Left to right) with the gearbox pointing downwards.
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Step 3: Measure the length of the lock
Using a ruler Take the full width measurement of the lock
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Step 4: Check the lock orientation
Turn the gearbox over so it's now facing upwards. Check if the gearbox is in the middle of the metal strip or to one side. If it’s to one side, you need the offset version, if it’s in the middle you need the inline version.
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Step 5: Measure the Gear box size
Next you need to measure the size of the gearbox. This is one of the most important measurements. So we will need to measure from the middle of the screw holes to the base of the lock.
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So now you should have 3 sizes
1 Lock length
2 The gear box orientation ( offset or inline)
3 The backset size.
Either give us a call on 01204 652211 to take your order and advise