LPS 1175 SR4 High Security Doors
The SR4 classification has changed to D10
Our LPS 1175 security doors provide independently tested protection against forced entry for commercial, industrial and high-security applications.
- LPS 1175 D10 certification
- Tested forced-entry protection for 10 mins
- Heavy-duty steel security doors
- Bespoke sizes and configurations
at a glance
one doorset. every essential option
- Single & double door formats
- Sashlock lever handles, deadlocks & pull handles
- Emergency panic hardware for fire exits
- Side panel & overpanel options
- Internal & external use
- Extra deadlocks
- Vision panels
- Powder-coated finishes
- Supply and installation
- Electronic locking / access control
Certified LPS 1175 D10 (SR4) High Security Doors
Maxium D10 (SR4) Security Doors are independently tested and certified to LPS standards, providing proven protection against forced entry for moderate and high-risk locations.
Can a D10 SR4 rated door be fire rated ?
Fire rated option available
Which security rating do I need?
The required rating will normally be determined by the project specification, security risk assessment, client or insurer. Maxium can help identify the appropriate certified doorset for your project.
What does the door come with ?
Manufactured as complete security doorsets, each unit combines a reinforced steel door leaf and frame with approved locking systems, heavy-duty hinges and anti-attack features. Bespoke sizes, configurations, hardware and finishes are available to meet your project requirements.
Where can security doors be used ?
Our LPS 1175 steel security doors are suitable for new-build and refurbishment projects where independently certified physical security is required.
- Utilities and critical infrastructure
- Substations and plant rooms
- Industrial and manufacturing sites
- Government and public buildings
- Data centres and server rooms
- Commercial and financial premises
- High-value storage areas
Get A Quote
Tell Us About Your High Security Door Requirement
See a Security Door in Operation
See how a complete security doorset combines robust construction, controlled access and reliable everyday operation. Maxium can specify the door, glazing, locking hardware and access-control equipment around the building and its users.
Considerations for High security Doors
specify based on security risk and usage of doors
The correct doorset and hardware will depend on the location, how the door is used and any regulatory or performance requirements.
D10 (SR4) applications
For the most demanding security requirements, SR4 doors provide exceptional protection. These doors resist prolonged, expert attempts at forced entry using sophisticated tools, such as disc grinders and reciprocating saws.
- Critical infrastructure sites.
- High-risk government facilities.
- Cash handling centres.
- Pharmaceutical storage areas.
- Vault & Safe rooms
- Jewellery Retaillers
security rating D10 (SR4)
Accredited to LPS 1175 Issue 8 D10 (SR4), providing a verified minimum 10-minute delay against opportunistic attacks using hand tools like including disc grinders, reciprocating saws, felling axes, jigsaws, and sledgehammers
- Internal & external usage
- Single door open outward only
- Double door open outward only
- Electronic & manual locking options
- Louvre option available
- Fire rated option subject to spec & sizes
LPS1175 D10 (SR4) Doors Solutions
Find out more about our approach to LPS1175 D10 (SR4) doors, including security, controlled access, replacement doorsets, installation and regulatory compliance. Select a section to learn more.
Still have questions?
01279 271192
sales@maxiumdoors.co.uk
LPS 1175 D10 (SR4) High-Security Doors
LPS 1175 SR2 security doors provide independently tested protection for buildings requiring a recognised level of resistance against forced entry.
These certified steel security doors combine a reinforced door leaf and frame with approved hinges, locks and security hardware. SR2 doors are suitable for commercial premises, utility buildings, storage areas and other moderate-risk locations.
- certified B3 (SR2) security doors
- Tested resistance to forced entry
- Reinforced steel doorset construction
- Approved locks and security hardware
- Bespoke sizes and configurations
LPS 1175 D10 (SR4) High-Security Doors
- LPCB-certified SR3 security doors
- Enhanced forced-entry resistance
- Heavy-duty reinforced steel construction
- Multi-point security locking options
- Suitable for higher-risk environments
LPS1175 Certified Steel High-Security Doors
LPS 1175 certification provides independent evidence that a complete security doorset has been tested against recognised forced-entry methods.
Certification covers the tested combination of door leaf, frame, hinges, locks, hardware and fixings. Specifying an certified steel security door helps ensure that the completed doorset delivers a defined and verifiable level of physical protection.
Our range includes certified security-door solutions for projects requiring LPS 1175 SR4 performance.
D10 (SR4) Security Doors for Utilities and Critical Infrastructure
LPS 1175 security doors are widely specified for utilities, infrastructure and high-security commercial environments where unauthorised access could result in theft, damage or operational disruption.
Maxium Doors supplies certified steel security doors for a wide range of secure locations throughout the UK.
- Electrical substations
- Water and utility facilities
- Data centres and server rooms
- Plant rooms and service buildings
- Industrial and manufacturing sites
- Government and public buildings
- High-value storage facilities
Bespoke LPS 1175 D10 (SR4) Security Doors Supplied and Installed
Our made-to-measure LPS 1175 security doors are available in single, double and leaf-and-a-half configurations, subject to the scope of the relevant certification.
Doorsets can be specified with approved locking systems, access-control hardware, door closers, thresholds and powder-coated finishes to meet the operational and security requirements of the building.
Maxium Doors provides supply-only and professional installation services for LPS 1175 SR4 doors across the UK.
- Made-to-measure security doorsets
- Single and double steel doors
- Approved hardware and locking systems
- Access-control-compatible options
- Durable RAL powder-coated finishes
- Nationwide supply and installation
- Selecting the appropriate security rating for your doors involves careful consideration of several factors: Conduct a thorough risk assessment to identify potential threats and vulnerabilities. This will help you determine the level of protection required for your specific situation. Consider any insurance requirements or industry regulations that may dictate minimum security standards. Failing to comply with these requirements could result in void insurance policies or legal consequences. Balance your security needs with aesthetic preferences and budgetary constraints. While higher security ratings offer greater protection, they may come at a higher cost or with limited design options. Consult with security door experts, like the team at Bradbury Group, who will provide tailored advice based on your unique circumstances. We will help you navigate the options available and make an informed decision.
British Made
Manufactured in uk under ISO 9001 quality management
Specification Support
Help selecting the appropriate product
Made To Measure
Every doorset made to suit the opening
Experienced Sales Team
Help specifying & quoting your project
Project Support
Survey, scheduling & installation management
Delivery And Installation
Experienced commercial door installation teams
Frequently Asked Questions About LPS 1175 D10 (SR4) Doors
Have questions about our Security doors doors? Here you’ll find straightforward answers about specifications, security, access control, installation and ongoing maintenance.
Still have questions?
01279 271192
sales@maxiumdoors.co.uk
A certified LPS 1175 security door is a complete doorset independently tested against defined methods of forced entry. Testing covers the door leaf, frame, locks, hinges, hardware and fixings rather than the door panel alone.
A SR4 security door is designed for moderate-risk locations requiring independently tested protection against determined forced-entry attempts. It provides a higher and more clearly defined level of security than a standard commercial steel door.
An SR4 security door is tested against a more demanding range of attack methods and tools than an SR2 & 3 doorset. It is commonly specified for higher-risk commercial, industrial and infrastructure sites.
The main difference is the level of forced-entry resistance demonstrated during independent testing. SR4 doors are tested against a more severe attack specification than SR3 doors. The correct rating should be selected according to the site risk assessment, project specification and any insurer requirements.
LPS 1175 SR4 security doors are commonly used at electrical substations, utility facilities, plant rooms, data centres, government buildings, industrial sites, high-value storage areas and commercial premises requiring certified physical security.
Yes. LPS 1175 SR4 doors can be supplied in a range of bespoke sizes and configurations, provided the finished doorset remains within the scope of its certification. Options may include single & double doorsets
Compatible access-control equipment can be incorporated into an LPS 1175 SR4 doorset. However, locks, handles, readers and other hardware must be specified carefully to ensure the required security rating and certified configuration are maintained.
Yes, some D10 SR4 security doorsets are available with both certified forced-entry resistance and fire performance. These requirements must be specified at the outset because fire resistance applies to the tested complete doorset and cannot simply be added to a standard security door afterwards.
The cost depends on the required security rating, door size, configuration, locking system, access-control hardware, finish and installation requirements. Contact Maxium Doors with your specification, approximate dimensions, quantity and site postcode for a tailored quotation.