- Locked by Key on either side.
- Ideal for upgrading from old 2 or 3 lever mortice deadlocks with minimum alteration to the door.
- Keyhole is 56mm backset from forend.
- 77mm deep case.
- 14mm bolt projection.
Dimensions | |
![]() Case Depth | 77mm |
![]() Backset | 56mm |
![]() Case Height | 87mm |
![]() Forend Length | 134mm |
![]() Forend Width | 26mm |
Lock | |
Mortice Type | Deadlock |
Lock Mechanism | 5 Lever |
Key Differs | 500 |
Bolt Projection | 14mm |
Backset (keyhole) | 56mm |
Colour | Satin Chrome |
Features | |
Insurance Approved* | ![]() |
Handed | Left, Right |
Keyed Alike | Free Upgrade |
In The Box | |
Lock Case | ![]() |
Strike Plate | ![]() |
Keys | 2 |
Escutcheons | ![]() |
Popular Delivery Options | |||||||||||||
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Indoor Delivery Options | |||||||||||||
Delivery & Install Options | |||||||||||||
Read more about delivery on our Delivery & Installation Guide and FAQ
All prices shown are inc. VAT. |
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Now | £6.81 |
26th Feb | £6.81 |
28th Mar | £6.80 |
As standard the ERA 301 Viscount - 5 Lever Deadlock (77mm) is supplied Keyed to Differ which means the lock includes a set of keys that are unique and will only open this lock. If you require multiple locks you can choose to have them all Keyed Alike, meaning that each lock can be opened using the same key.