Mul-T-Lock MTL300 Break Secure 3XP Pro Euro Cylinder - Keyed Alike Pack

Measuring Tips

With Thumbturn

No

Yes

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Choose External & Internal Sizes

External (A) Internal (B) {{ dimension.label }} {{ dimension.label }}

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This cylinder is reversible.

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Measuring to replace a cylinder

Measuring for a new cylinder

If you're measuring for a new door, you'll need to consider the door's width and any door furniture, such as handles or escutcheons.

Measure from the outside edge of the door (including furniture) to the centre of your door. This is dimension A and is called the External Size to Centre.

Next, measure from the inside edge of your door (including furniture) to the centre of your door to find dimension B, the Internal Size to Centre.

As a final check, measure from the outside edge to the inside edge (including all furniture) to find dimension C called the Overall Length.

If you've measured correctly the overall length, C, will be dimensions A and B combined.