Security Rated Steel Door - SR1

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The Securidor+ S1 security door range comprises of single and double security-rated steel door-sets that are specifically designed for use in locations that would benefit from enhanced protection. The typical applications for this range includes leisure facilities, schools and universities, housing association communal areas and general retail outlets.

Please note that these door-sets can only be supplied with outward opening leaves.

  • Secure for sure with Strongdor
  • Up to 3m high
  • Wide choice of hardware
Unique Range Features

Easy fit doors
1 year warranty
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Product Features

Height Icon

Single - up to 3.1m
Double - up to 3.1m

Width Icon

Single - up to 1.4m
Double - up to 2.8m

Leaf Thickness

45mm deep leaf skin

Further information


The welded frame is made from reinforced 1.5mm galvanised steel and a 38mm x 100mm single rebated profile. It is reinforced at the hinges, lock keeps and fixing points.

Manufactured from 1.5mm galvanised attack face steel with 1.5mm inner face, the composite door leaf is 45mm thick with astragal lip to the closing edge. It weighs approximately 40kg per square metre.

Key Features
The range is certified to LPS1175 SR1, and fitted with a double hinge to top of door for additional strength. It also incorporates an anti leverage cover strip to closing edge of door leaf. The door-sets are also Secured by Design approved and are also available with solid over panels and hinged over panels which can be fixed, or removable.

Certified by the Loss Prevention Certification Board to LPS 1175 SR1 Issue 7 Cert/LPCB Ref. 1542a

Aluminium and Type H.

Choice of Exidor 301 Panic Actuator, Exidor 294A SD Panic Bolt available, an optional extra outside access device. Nemef Triple lockset, Zero Sashlock, Zero Nightlatch, IDC security Escutcheon. Flush Bolts or 12” Monkey Bolts to passive leaf. Keys and cylinders can be registered to eliminate the chance of key copying.

Wide choice of finishes available including powder coated finish from our range of RAL or BS colours.

Optional Extras
Door Viewer

Suitable Substrate
Structural timber or steelwork, blockwork or brickwork/ concrete blockwork.
Minimum Fixing Size - M6/No.12 .

Aluminium Threshold with Neoprene Seal

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Securidor Typical Leaf and Frame

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LPS 1175 Explained

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Strongdor Lps1175 V Pas24

LPS 1175 vs PAS 24:2016 Key Differences

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Door Configurations

Steeldor can be configured for use as both personnel doors and emergency exits. The single, double and leaf and a half door-sets can also be supplied with bespoke side and overpanels.

Personnel configs
Emergency Exit configs

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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