LPS 1175 SR4 Steel Doors

LPS 1175 SR4 Steel Doors

Size Converter into MM


The SR4 security door is a steel door that is independently attack tested by the LPCB. The doorset is attacked with a variety of hand and battery operated tools for a maximum of 30 minutes, with a maximum working time of 10 minutes.  If entry through the door is not gained within the 20 minutes, it then receives the LPS 1175 Issue 7 Level SR4 rating. 
Security Level
LPS 1175 Issue 7 Level SR4

Home Office Gun Room Regulated Door - This door is also the door that the Home Office advise to be installed on gun rooms in there 2005 Firearms Handbook 

Common Use
MoD Sites, Police Stations, Banks, Cash Offices, Gun Rooms, Safe Rooms, Hospitals and Utility Buildings 

- Extensive range of locking options
- Available with fixed, removable or hinged overpanels 
- All doors come with stainless steel dog bolt security hinges 
- Manufactured from Galvanised steel and Armoured steel
- Anti jemmy strip welded full height to protect locking from attack 
- Available in a wide range of RAL or BS colours 
- Certified vision panels or louvre panels within each door leaf
- Available with 240 minutes fire rating


Single Doors
Maximum Width:- 1430 mm
Maximum Height:- 2930 mm
Weight - 90 kgs per square meter
Leaf & Half / Double Doors
Maximum Width:- 2600 mm
Maximum Height:- 2930 mm
Weight - 80 kgs per square meter


Frame:- Available in a fully welded form or knock down form 
Material:- 2mm Zintec steel
Profile:- 110mm Single rebated frame
Reinforcing:- Reinforcing around the lock, hinges and fixing points 


Material:- 1.5mm Armoured steel external face and internal door face. 
Size:- 66mm thick door leaf with a Anti jemmy strip on the external lock side to protect the lock from attack .
Core:-  Reinforcing bars welded horizontally and vertically within the door leaf. Core infills vary.
Hinges:- Stainless steel dog bolt security hinges. The amount of hinges varies on the size of the doorset.


Steel options, aluminium options or no cill options available 


 Single Point Locking - Mico Abryll

A:- Full range of panic, manual, automatic and electromechanical deadlocking options
B:- External access via Mico USCH cylinder guard with Scandinavian oval cylinders provided as standard 
C:- Available to suit round or rim cylinders
D:- Passive leaf fitted with heavy duty tower bolts as standard. 
E:- Double panic bar available 


All options are available with up to a 240 minute fire rating. The following exceptions apply:

A:- Vision panels reduce the fire rating to 60 minutes 
B:- Louvre panels 
C:- 2 Point locking systems are not covered and will be provided with a single point or 3 point locking system


A:- Vision panels (Standard sizes - 203mm x 356mm, 203mm x 762mm or 457mm x 57mm)
B:- Punched and bladed louvers 
C:- Range of stays and door closer's 
D:- Side panels or removable panels 
A:- Primer grey - Basic finish 
B:- Powder Coated a stock Ral or BS colour 
C:- Marine Powder Coated a stock RAL or BS colour
D:- Matt, Satin or Gloss finish available. Most powders are stocked in satin.

Standard colour chart below.



Security Level - Very High Security

Very High Security Applications where attackers are very detrmined and well equiped

Product Benefits

Tested and Certified by the LPCB to LPS1175 and is Secured By Design Approved


MOD Installations, Banks, Police Stations, High Risk Utilities

  • Product Code: SR4 Steel Doors
  • Availability: Out Of Stock

Tags: LPS 1175 SR4 Steel Doors, LPS 1175 High Security Steel Doors, Security Direct

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