NBS Source
List your products
SECUR-DOR 4 Double

SECUR-DOR 4 Double

Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Robust UK Ltd

Intruder and blast resistant, double leaf, steel security doorset.

Jump to:
+44 (0)1782 592900 www.robust-uk.com

For protecting medium to high risk properties from experienced attempts at forced entry, regardless of noise, using heavy hand and battery tools, or explosives.


Double leaf, single swing, steel security and blast door. Conforms to BS EN 1627 RC4 and BS EN 13124-2 EXR2.


For protecting medium to high risk properties from experienced attempts at forced entry, regardless of noise, using heavy hand and battery tools, or explosives.

General information

Uniclass 2015

Pr_30_59_24_37 High-security doorsetsPrimary


L20/480 Doorsets

L20/515 Blast resistant door

L20/55 Doorsets

Specification data - High-security doorsets

Product Reference

SECUR-DOR 4 Double


Equal split, latched

Equal split, unlatched

Unequally split, latched

Unequally split, unlatched

Size (w x h)

As drawing

Insert reference.

As schedule

Insert reference.

Finish/ Colour

Polyester powder coated, non-standard colour range

Insert colour requirement.

Polyester powder coated, standard colour range

Standard, insert colour requirement.


For site finishing.


Type C

95 mm depth.

Type D

145 mm depth.


Manufacturer's standard

MICO Tindall hardware

Insert requirements.

Surelock McGill hardware

Insert requirements.

Three-point, heavy duty panic hardware

For fire escape.

Standard product features

Door leaf:

- Construction:

Manufactured from two 1.5 mm thick corrosion resistant zintek®/ Aluzinc sheets, lockformed together by bonding the two steel skins around a rigid core of solid timber cored with a 1.5 mm thick internal stainless steel anti-attack skin. It provides a total steel armour thickness of 4.5 mm. Fitted with a full length continuous hinge and an integral lock box.

- Thickness:

48 mm.

Door frame:

- Construction:

Folded and welded from 3 mm thick zintek®/ Aluzinc sheets. A specially modified, variable subframe is supplied as standard, which accommodates site tolerance of -0 mm/ +30 mm and provides additional protection to the fixings against jemmys.

- Fixings:

Stainless steel dog bolted continuous hinges for additional security.

Thermal transmittance (U-value):

2.9 W/m²K.


15 mm rebated, DDA compliant.


Heavy duty and vulnerable properties, probably with a prior record of attempts at forced entry. Provides protection from experienced attempts at forced entry of commercial properties with no regard for noise. Furthermore, the door is suitable for protection against attempted entry by explosive blasts.


  • Intruder resistance (to BS EN 1627): Up to RC4.
  • Explosive resistance (to BS EN 13124-2): Up to EXR2.

Product Options

Size (w x h):

Available up to 2600 x 2800 mm.


- Manufacturer's standard:

Centre high security sashlock combined with two similar deadlocks in the upper and lower quarters of the door. All locks are fitted with anti-jemmy escutcheon and welded shroud. Locks are anti-drill and pattern protected to reduce risk of key copying. Fitted with Exidor tower bolts to active leaf and heavy duty Exidor tower bolts to inactive leaf.

Third party certifications
  • Loss Prevention Certification Board (LPCB): Certified
Similar products from Robust UK Ltd