PAS 24 - Secured By Design Steel Door

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Strongdor Secured by Design door-sets are certified to comply with the standards set by the national Police initiative to improve the security of buildings and their immediate surroundings, to provide safe places to live, work, shop and visit.

These door-sets offer greater protection to bin stores, plant rooms and access to communal areas and can be used on both residential and commercial developments that require the peace of mind that comes with Secured by Design compliance.

Available with multiple upgrades including acoustic rating up to 39dB, U-value as low as 1.5Wm2K*, manual and electric locking. 

*U-value not available on louvred door-sets. 

  • Manual or Electric Locking
  • Rockwool or Honeycomb Core
  • Up to 3.24m high with solid/glazed over panel
Unique Range Features

Fast quotes
Easy fit doors
Steel door experts
10-15 day lead time*

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Product Features

Height Icon

Single - up to 2.25m
Double - up to 2.25m

Width Icon

Single - up to 1.36m
Double - up to 2.49m

Leaf Thickness

44mm deep leaf skin

Air permeability

EN1026:2000 to class 4 – 600Pa (113kmh) test pressure

Water tightness

EN1027:2000 to 150Pa for outward opening and 100Pa for inward

Fire resistance

Upgrade to Internal BS EN 1634:1 2008

Resistance to wind load

EN12211:2000 to 1200Pa (Class A3) 98 mph


Available - air flow reduced due to security design

Weather tightness

BS 6375: Part 1: 2009 (test to EN1026:2000, EN1027:2000, EN12211:2000) to 1200 exposure rating


Available with an insulated core as low as 1.5 U-value*

Strongdor Icons Acoustic

Up to 39dB rating.

Further information


44mm door leaf thickness, fitted with an integrated astragal for added security. Comprising of 2 x 1.2mm steel sheets, the leaf skins are mechanically interlocked and internally bonded providing greater stability and protection against de-lamination.
42mm thick ‘Hexatex’ core or upgrade to insulated core for up to 1.5 W/m²K.

Certified to: PAS 24:2016 Enhanced security performance requirement for door-sets and windows in the UK. Door-sets and windows intended to offer a level of security suitable for dwellings and other buildings exposed to comparable risk. BM Trada Certificate 050/250.

Classified as single and double lead, over panel, fully glazed, hinged, internally glazed, inward opening, louvre, outward opening, side panel/vision panel, with or without letter plate.

AM3 inward opening or AM5 outward opening threshold available on request.

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

Options and Upgrades
Manual and electric locking Glazed and louvre panels available.

AM3 Door Threshold

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AM5 Door Threshold

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Glazed Vision Panel Cross Section

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Strongdor Steel Door Single Install Thumbnail

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.

Strongdor Double Door Install Thumbnail

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

Touching up Paintwork

A demonstration of how to sue the touch up kit supplied with your steel door-set.


Securidor Secured by Design, PAS 24 - Manual & Electric Locking

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Standard Colours & Coatings

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Strongdor Lps1175 V Pas24

LPS 1175 vs PAS 24:2016 Key Differences

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Door Configurations

Manual & Electric SBD Steel Doors


Over 150 colours available

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Frequently Asked Questions

Which security door is the best?

Unfortunately there is no simple answer to this question as all security rated door-sets have protection enhancement. The level of security required for your door-set will be dependent on the location and specification of your installation.

Check out our documents LPS 1175 vs PAS 24:2016 and LPS 1175 Explained to see which security rating may be best for you!

Who is responsible for ensuring the sales quotation meets the specification and building regulations, including location and method of installation?

It is the customer’s responsibility to ensure all details within the sales quotation / sales order meet the exact specification and / or original enquiry and are compliant with current building regulations including location and method of installation.

We are here to help and advise only and cannot accept responsibility for discrepancies after the order is confirmed.

Strongdor Terms and Conditions

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