Premium Steel Doors Manufactured in Britain
Premium Steel Doors Manufactured in Britain 
Steeldor single and double personnel door-sets are designed for internal and external use in commercial and industrial buildings, offering a strong and secure solution for everyday access requirements.
Each steel door-set is custom-built to order, with a wide range of configurable options. Choose from louvre panels, vision panels, over panels, side panels, frames, thresholds, and hardware to meet your exact specifications.
With an impressive acoustic rating of up to 39 dB, Steeldor door-sets help reduce sound transmission, making it ideal for noisy or sensitive environments where sound control is crucial.
Manufactured from high-tensile, corrosion-resistant steel, every door-set comes finished with a durable powder coating and a suitable installation kit for straightforward fitting. This ensures long-term performance in both indoor and outdoor settings.
Thanks to its reliability and flexibility, Steeldor remains a trusted choice for contractors, architects, and specifiers, delivering consistent performance across a wide range of projects.
Single - up to 2.96m
Double - up to 2.96m
Leaf & A Half - up to 2.96m
Single - up to 1.4m
Double - up to 2.7m
Leaf & A Half - up to 2.69m
44mm deep leaf skin
EN1026:2000 to class 3 – 600Pa (113kmh) test pressure
EN1027:2000 to 150Pa for outward opening and 100Pa for inward
EN12211:2000 to 1200Pa (Class A3) 98 mph
Available with an insulated core as low as 1.5 U-value.
Up to 39dB rating.
Download the full Steeldor Technical Specification (PDF)
The door leaf is 44mm thick and includes an integrated astragal for enhanced security.
It is made from two 1.2mm Rustec steel skins that are mechanically interlocked and internally bonded, providing greater stability and resistance to delamination.
Core options include:
Contact a steel door expert to discuss suitable hardware configurations.
See the full tech spec (PDF)
All specifications and options are detailed in the Steeldor Technical Specification PDF.
Single Door Installation
This video contains detailed, step-by-step instructions for the safe installation of a Strongdor Steeldor single door-set. Please pay particular attention to the safety instructions.
Double Door Installation
This video contains detailed, step-by-step instructions for the safe installation of a Strongdor Steeldor double door-set. Please pay particular attention to the safety instructions.
Touching up Paintwork
A demonstration of how to sue the touch up kit supplied with your steel door-set.
Speak to an expert now
01524 727000 Our vision panels are produced in various panel formats and sizes, some of which can be fire rated, we offer a choice of glazing options depending on the door's application.
Designed to increase airflow in areas that need efficient ventilation, louvred door, side, over panels and walls offer a flexible solution without compromising security or structural integrity.
Personnel Steel Doors
‘LPS’ is the abbreviation for Loss Prevention Standard and ‘LPS1175’ is just one of many standards created by the Loss Prevention Certification Board. LPS1175 specifically focuses on the intruder resistance and security of doors, and in Strongdor’s case, steel doors.
View ArticleNo, Strongdor are a supply only manufacturer and therefore unfortunately don't offer site surveys or installation. However we can recommend local installers in your area from our Doorfit Network, who will be happy to help.
Complete our quotation request form, mention you are looking for installation and we will put you in touch!
For any door that is installed within 5km of the coast, we recommend that you talk to one of our sales team members about specialist door coatings.
Please ensure you advise our sales team when making your initial enquiry and they will quote accordingly.
Purchase steel doors regularly? Speak to one of our account managers and request to set up an account today.
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