Security Doors

Thermal and Fire Rated Steel Doors

From only £1,715

Based on 1000mm x 2100mm

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Key product Features

Door Type

Single, Leaf & Half or Double Dorsets

Fire Rated

Up to E60

Acoustic Rating

Up to 36dB

U Value

Single- 1.6 W/m2K, Double - 1.5 W/m2K


1.5mm Rustec Steel

Locking Hardware

Manual and Electronic Locking

Door Leaf Core


Standard Finish

Range of 150 Stocked Colours

Lead Times

15-20 working days

Why use the Thermally Rated Steel Doors?

Choosing Thermal and Fire Rated Steel Doors from Security Direct ensures you are investing in the highest standards of safety, efficiency, and durability. Our Firedor Thermal doors are designed to meet the growing demand for doors that offer both exceptional thermal insulation and reliable fire protection. These doors are built to last, featuring a 44mm thick leaf made from 1.2mm 'Rustec' steel sheets, mechanically interlocked and internally bonded to prevent de-lamination and enhance stability.

The thermal performance of our Firedor Thermal doors is outstanding, with U-values as low as 1.5 W/m2K, making them an ideal choice for improving energy efficiency in buildings. The insulated core of these doors helps maintain optimal indoor temperatures, reducing energy costs and enhancing comfort. This makes them suitable for both internal and external use, including applications such as emergency exits and personnel doors.

In addition to their thermal properties, these doors provide robust fire protection, rated up to E60 and compliant with UKCA and CE standards, including BS EN 14351-1 and EN 16034. This level of fire resistance ensures that your building is safeguarded against fire hazards, providing crucial time for evacuation and minimizing damage. The doors can also be equipped with various hardware options, including Mico Modular or MSR in both personnel and panic configurations, ensuring they meet the specific needs of your application.

Our Firedor Thermal doors are highly customizable, available in a wide range of RAL and BS colors to match your building's aesthetics. They come with different threshold options, including Part M compliant thresholds for improved weatherproofing, and can be fitted with vision and louvre panels for added functionality. With a fast lead time of 10-12 days, these doors offer a quick and efficient solution to your security and efficiency needs.

In summary, Security Direct’s Thermal and Fire Rated Steel Doors are the perfect blend of energy efficiency, fire protection, and customizable options. Whether you need robust doors for high-traffic areas, emergency exits, or energy-efficient solutions for your building, these doors meet the highest standards of safety and performance. Trust Security Direct to provide doors that not only protect but also enhance the functionality and efficiency of your property.


Manufactured from lightweight, high tensile 1.5 mm thick ‘Rustec’ steel.
Adjust 2-Fit side expander system that offers up to 12mm expansion to the structural opening.

44mm door leaf thickness incorporating an integrated astragal for added security. Comprising of 1.2mm 'Rustec’ steel sheets, the leaf skins are mechanically interlocked and internally bonded, proving greater stability and protection against de-lamination.
Insulated core offers a U value as low as 1.5 W/m2K

Door Ironmongery
Mico Modular or MSR available in personnel or panic options.
Fire tested both sides, except a single 2-point panic.

Supplied inclusive of a powder-coated finish in a standard colour. Full range of RAL and BS colours available.

Fire Rating
Fire-rated up to E60 and UKCA | CE marked to BS EN14351-1 and EN 16034 standards.

Acoustic Rating
Up to 36dB rating.

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