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Commercial mortice locks


UNION HD72DNL Heavy Duty Mortice Euro Deadlocking Nightlatch

UNION HD72DNL Heavy Duty Mortice Euro Deadlocking NightlatchUNION HD72DNL Heavy Duty Mortice Euro Deadlocking Nightlatch - dimensions


The UNION HD72DNL 72mm centres DIN euro deadlocking nightlatch case is ideal for use on heavy duty commercial projects. CE Marked, it has been tested to EN12209:2003 and can be used on fire doors. Designed for use with bolt through lever handles, but only the inside handle is used. A blank escutcheon to hide the bolt through fixings or a taylor spindle is used to fit a handle securely this way. A pull handle or cylinder pull is recommended for the exterior of the door.

For use in high frequency areas used by public or others with little incentive to exercise care and with a high chance of misuse.

Meets the current requirement under The Equalities Act (old Disability Discrimination Act, DDA).

Deadlocking Nighlatch function from the inside:
Latch bolt withdrawn by either the lever handle or the cylinder key/turn
When the door closes and the snib comes into contact with the strike the latch is deadlocked

Deadlocking Nightlatch function from the outside:
Latch bolt withdrawn by the cylinder key to unlock the door
When the door closes and the snib comes into contact with the strike the latch is deadlocked and a key must be used for re-entry
NOTE: No lever handles are used on the outside. Use a pull handle or cylinder pull

UNION HD72DNL - Heavy Duty Euro Profile Deadlocking Nightlatch - dimensions

Tested to BS EN 12209 CE Cert No: 0086-CPR-658456
An explanation of product classification with reference to heavy duty mortice locks

CE Marked and fully tested to EN 12209:2003 Grade 3 category of use: High frequency of use by public or others (i.e. members of the public, students and employees etc.) with little incentive to exercise care

CE Marked, Suitable for use on fire doors

Tested to EN 1634-1 2014 on 30 and 60 minute timber fire doors and 240 minute metal fire doors
For 30 and 60 min fire doors use 1mm interdens behind the strike plate and 2mm interdens around the lockcase

Certifire approved: CF5543

15 year guarantee: The performance of the HD72 is supported by a 15 year guarantee
Equality Act: The dimensions of the lock case assist in fulfilling requirements and duties required under the Equality Act by satisfying the recommendations of BS 8300 2009 and Approved Document M 2015 (2016)

Mortice lock, c/w fixings:-

Model Description Finish Stock Price Price (ex-vat)
HD72DNL Mortice deadlocking nightlatch Satin stainless steel Yes £16.90 £14.08

Intumescent lock pads:-

Model Description Stock Price Price (ex-vat)
INT.SL Interdens intumescent lock jacket, set Yes £7.32 £6.10

How much will delivery cost?

- For items longer than 4.0m the UK Mainland delivery cost is £12.00 + VAT.
- For items between 1.3m - 3.9m long the UK Mainland delivery cost is £8.85 + VAT. 
- For shorter items, the UK Mainland delivery cost is £6.95 + VAT.
- Small items and lightweight items, which can be posted, automatically have a lower delivery charge dependent on weight.
- Orders over £200 net qualify for free delivery, except in the following cases:-
   - For any items over 4.0m in length.
   - For iMpero pocket door kits there is a large item delivery cost of £12.00 + VAT.
   - For destinations including Scottish Highlands (postcode areas: all IV postcodes, KW1-14, PA34, PA37-39, PH19-26, PH30-41, PH49, PH50) & Islands, Northern Ireland, Republic of Ireland, Channel Islands etc, there are separate delivery charges set up for each product type, based on weight & dimensions. Either give us a ring for delivery costs for your particular order, or enter your items into a shopping basket, and compare delivery options there.

How long will delivery take?

We aim to get your order to you as quickly as possible! Orders received before noon for stock items will be dispatched the same day.  Items sent by TNT to UK mainland destinations should arrive the following working day between 8am - 5pm, TNT will email you a tracking number to allow you to track the delivery. Items sent by Royal Mail may take longer, and are not yet tracked.

For destinations including Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, Channel Islands & further afield, transit times are longer, phone us for details.

For items which are not stocked, an indication of lead time is given next to the price for each product. Please note this is an indication only, and occasionally delays may arise outside our control, in which case we will always try to contact you. Sometimes stocked items (stock status shown as "Yes") may go out of stock due to high demand, usually they will be back in stock again within one or two days. Please note the stock status is not updated live, so your delivery may be affected. If delivery time is crucial to you, please telephone us for accurate stock information.

Will I need to sign for my parcel?

- Small items and lightweight items which can be posted will arrive with Royal Mail postal delivery, no signature will be required.
- Security sensitive items, such as master keys, will be sent by Royal Mail Signed For service, a signature will be required.
- Most items will be sent via TNT or Asprey 24, who deliver between 8am - 5pm and will require a signature. Write "Unchecked" by your signature, in case of damage in transit.
- Items over 3.6m in length will be delivered by Asprey 24 between 8am - 5pm. Again, write "Unchecked" by your signature, in case of damage in transit.


We are so confident of the quality of our products that if any item does not meet your expectations you may return it for whatever reason within 14 days, no quibble! All we ask is that returns arrive in unused, perfect condition, with the original packaging still intact. Costs of returning the goods are your responsibility. DO NOT return the item without first contacting us as we will be unable to give you a refund. Customers must obtain proof of return from their carrier. Any returns after 14 days are at our discretion and a 15% restocking fee will be charged. No returns will be accepted after 90 days. Items which are made-to-order, or finished-to-order are not refundable. Customers must meet the cost of return carriage on correctly supplied goods. This does not affect your statutory rights.

Please Note - you are responsible for cost of returning unwanted/cancelled items to us and for the value of the goods if they are diminished as a result of your handling whilst with you or in the return transit to us. Please take care of them and package them well.

Faulty Goods

All Doorstuff products are rigorously quality checked before dispatch but in the unlikely event that you experience any problems or your product is faulty please e-mail us at or call our customer service team on 01626 335500. We will promptly deal with your queries and if necessary arrange for a replacement to be sent without delay. This does not affect your statutory rights.

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If you have any questions or need help with your purchase, please call us on: 0207 099 2822 or email
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