Security Doors - LPS1175 Security Level 4
Starting Price (Based on 1000mm x 1000mm)
Our LPS1175 SR4 Steel Security Doors are engineered to provide a high level of protection for buildings exposed to more sustained and aggressive attack methods. Certified by the Loss Prevention Certification Board to LPS1175 Security Rating Level 4 (SR4), these doors are designed to resist forced entry using a wider range of tools over longer attack durations. Ideal for high-risk commercial, industrial, and infrastructure environments, they offer dependable, certified security performance.
Manufactured from heavy-duty steel construction, SR4 doors are built for strength, durability, and long-term reliability. They can be configured with a wide range of personnel, panic, and escape hardware, including options compliant with BS EN 179 for safe emergency egress. With over 100 locking configurations available, including single and multi-point bolting systems, these doors provide a high level of flexibility to meet specific security and operational requirements.
Each door is manufactured to your exact specification, with a range of sizes and finishes available to suit your project. A 400mm square louvre panel option is available where ventilation is required, although vision panels are not offered in order to maintain the doorโs certified security performance. With robust construction, low maintenance requirements, and advanced locking options, SR4 steel security doors provide a reliable and effective solution for high-security applications.
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Product Overview
Product Overview
Design & Customisation
Design & Customisation
Technical Specifications
Technical Specifications
Delivery & Installation
Delivery & Installation
Pricing & Budget Guide
Pricing & Budget Guide
Take a Closer Look
Reinforced Steel Leaf
Tested Locking System
Access Control Intergration

