Yale PM552 5 Lever Mortice Deadlock 2.5 Inch(64 mm)
Boxed, Suitable for External Doors, Brass Finish
Mortice deadlocks are commonly fitted to wooden doors and be locked from both the inside and outside with the right key. The lock itself is fitted within the door unlock other locks which sit on the surface. Mortice deadlocks are ideal for fitting to front or back doors, especially with the 5 level technology which requires the key to turn 5 levers (rather than 3) which gives the lock a High Security rating.
The mechanism for the lock is relatively large so the door in question will require enough thickness to accommodate the lock. When the correct key is inserted, the levers align and the mechanism will rotate which in turn extends the bolt. If an incorrect key is used, it might not even fit into the lock or it won’t trigger the levers correctly and not withdraw the bolt.
Being a mortice lock, it only has a keyhole and a bolt that goes back and forth, therefore you will always require a key to open the door. Mortice locks are commonly used in doors due to their security and reliability.
* Effective from 3 December 2025 * Free delivery on order over €400, applies to Small & Light, Large & Heavy items within zone 1 only.
Zone Indicator:
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All Zone area
Items under 20kg weight & under 2m long, (some fragile items may not be included e.g. glass/mirrors)
Large and bulky items Extra Large items
Zone 1 & 2 only
Wet & hazardous bagged, items over 20Kg weight & oversized; Euronics white goods, TVs of all sizes.
Large Paint items (6L / 6L+)
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Large hazardous items (6L+) - available for collection
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Zone 1 only
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Old Appliance Collection:
When you buy a large appliance, we’ll collect your old one for free through WEEE Ireland. Please ensure it is uninstalled, disconnected, and ready for pickup. Collection is like-for-like and takes place at the front door or apartment entrance. Restrictions may apply based on access and item type.
At TJ O'Mahony we will exchange or refund any Retail unused product returned to us in its original condition within 30 days of receiving it (*)You can return any unused product to us in its original condition for a full refund or exchange within 30 days of delivery.
This right to return does not apply to products that are non stock and only available to order such as catalogued doors, catalogued bathroomware and mixed paints which are made especially for your order.
Please note that we are unable to accept returns on certain bagged building products and materials, including (but not limited to) hard wall, cement, bonding, slates, and ridges. We appreciate your understanding and recommend checking product requirements carefully before purchase.