Kirncroft Security Doors Black and Yellow Chevrons
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Steel Doors – “a door is a door is a door…”

Not if it’s a Kirncroft Door

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You won’t find a budget steel door range at Kirncroft.

Kirncroft steel security doors are high-spec as standard.

High specification & low-cost steel security doors.

Because we manufacture at our purpose-built factory, we can offer Kirncroft steel security doors at low prices without sacrificing quality or specification.

Being able to control the whole manufacturing process means that we can subject every product to our comprehensive 50-point quality control process.

Real-world and lab-tested since 1999, our steel doors are manufactured from high-grade materials and come complete with high-spec, high-security hardware.

Shipped assembled and pre-hung in the frame, Kirncroft steel security doors offer a quick and hassle-free installation.

Kirncroft security doors are specified extensively for a wide range of applications where high security is a priority:

  • Anti-vandal steel modular buildings
  • Modular buildings
  • Steel framed buildings
  • General building projects

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Short lead time? Do you need steel security doors in a hurry?

We have 1000’s of doors available from stock.  Get in touch for more information.

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Galvanised steel structure
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Extra-strong structural design
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Stainless steel hardware
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Extra-secure Kirncroft locking system
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Fully weatherproofed
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Low U-value 1.8
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Made by us in our own factory
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Available from stock
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Complies to UK standards
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2 year warranty

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STEEL SECURITY DOORS THAT ARE BUILT TO LAST

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Kirncroft 10-point locking steel security door auxiliary lock
Kirncroft 10-point locking steel security door external view
Kirncroft Security Doors Internal View
Kirncroft 10-point locking steel security door main locks out
Kirncroft 10-point locking steel security door keep plate
Kirncroft 10-point locking steel security door main lock external view
Kirncroft 10-point locking steel security door main locks out close up
Kirncroft 10-point locking steel security door top lock
PRICES
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Frame size (mm)
890 x 2095mm
Price (Exc. VAT)
£268.84
Frame size (mm)
910 x 2065mm
Price (Exc. VAT)
£268.84
Frame size (mm)
910 x 2065mm^
Price (Exc. VAT)
£284.86
Frame size (mm)
990 x 2095mm
Price (Exc. VAT)
£287.14
Frame size (mm)
1110 x 2065mm
Price (Exc. VAT)
£343.20
Frame size (mm)
1110 x 2065mm^
Price (Exc. VAT)
£356.93
Frame size (mm)
1210 x 2065mm
Price (Exc. VAT)
£372.94
Frame size (mm)
1894 x 2065mm*
Price (Exc. VAT)
£656.66
All doors come pre-hung in the frame complete with stainless steel threshold and the following hardware:

  • Stainless steel fully welded anti-knockout hinges
  • High security 10/12-point locking system fitted
  • High security euro-cylinder
  • Stainless steel lever handles
  • Weatherproofing seal
  •  Plastic fixing hole caps

^Anti-vandal specification – Stainless steel stepped threshold and extra anti-jemmy flange

*12-Point Locking Double Door – Equal or unequal split available.

Prices are Ex Works, exclude VAT and are subject to our standard terms and conditions.  Please contact us for delivery costs.

All doors are fitted with Part M compliant disabled specification stainless steel thresholds unless stated otherwise.

DETAILED SPECIFICATION
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Toggle through the sections below for further information:

Door Construction

Kirncroft steel security doors are designed and manufactured to the highest standards:

  • 1mm
     
    (20 gauge)
    thick galvanised steel door sheet
  • 2mm
     
    (14 gauge)
    thick galvanised steel door frame
  • 1.7mm
     
    (16 gauge)
    thick stainless steel threshold
  • Door and frame profile – Rebated to produce a natural anti-jemmy astragal
  • Anti-vandal specification – Extra anti-jemmy flange available
    on 910x2065mm & 1110x2065mm sizes

The internal construction of a Kirncroft steel door sets it apart.

Kirncroft security doors are designed and built to last:

    •  
    • Door leaf insulation – Polyurethane foam injection
    • Door frame insulation – Polyurethane foam injection
    • Steel subframe and strengtheners
    • 4mm
      (3/16″)
      roundbar steel mesh throughout the door
    • 4mm
      (3/16″)
      steel strengthening plates at lock and hinge fixing points
    • 3mm
      (1/8″)
      steel backing plates for fixing surface mounted hardware
    • 2mm
      (1/16″)
      steel lock protection box
    • Anti-drill plates
    • Stainless steel locking rod tubes
    • Galvanised steel locking rods
    • Fully sealed door, frame and threshold

Standard Features

Kirncroft multi-locking security doors come complete with the following standard features:

  • High security 10-point locking system
  • Anti-drill Euro profile cylinder
  • Anti-snap mortice lock
  • Stainless steel lever handles
  • Anti-jemmy studs
  • Stainless steel fully welded “anti-knockout” hinges
  • Stainless steel threshold –
    Part M
    ADA
    compliant
    or stepped specification (910x265mm or 1110x2065mm door sizes only) available.
  • Weatherproofed top locking bolt grommet
  • Weatherproof rubber seal system
  • Stainless steel keep plates
  • Stainless steel screws throughout

Double doors:

  • High security 12-point locking system
  • Stainless steel finger operated latches to secondary leaf

Modular Building Applications

Each Kirncroft steel security door is designed and physically checked to make sure that there is a 4mm (3/16″) tolerance between the door and frame.  This built in tolerance ensures that in the event of a modular or portable building “racking”, the door will operate with full functionality.

Certification and Testing

Kirncroft Security doors have been thoroughly tested
to current EN standards to demonstrate compliance with UK & European regulations
, allowing you to be able to specify our products with the utmost confidence:

      • Thermal insulation
        U value
        1.8/m2K
      • BS EN1191
        Resistance to repeated opening and closing
        – 50,000 cycles
      • Multi-locking system – 200N operating force for 200,000 cycles
      • Acoustic rating – 32 (-2;-7) dB
      • BS EN1906
        Stainless steel lever handles
        – 100N operating force for 200,000 cycles & high corrosion resistance
      • BS EN1935
        Stainless steel hinges
        – 200,000 cycles & high corrosion resistance

Size Specification

Sizes in inches

Frame depth - 3.5″
Door thickness - 1.8"
Aperture size - Frame size + 0.4″
*Double leaf doors - Equal and unequal split available
Frame SizeInternal Size
35 x 82.531.1 x 79.9
35.8 x 81.331.9 x 78.7**
39 x 82.535 x 79.9
43.7 x 81.3 39.8 x 78.7**
47.6 x 81.343.7 x 78.7
74.6 x 81.3*70.6 x 78.7

Sizes in mm

Frame Depth - 90mm
Door Thickness - 45mm
Aperture Size - Frame Size + 10mm
* Double Leaf Doors -Equal and unequal split available  
Frame SizeInternal Size
890 x 2095790 x 2030
910 x 2065810 x 2000**
990 x 2095890 x 2030
1110 x 20651010 x 2000**
1210 x 20651110 x 2000
1894 x 2065*1794 x 2000

Customisation

Kirncroft steel security doors can be customised with a wide range of hardware to suit your requirements.

Door Customisation and hardware options.

Handing and Opening

Kirncroft Security Doors External opening left hand hungKirncroft Security Doors External opening right hand hunginternal opening left hand hung internal opening right hand hung

Handing and Opening

Kirncroft Security Doors Handing

If you have any questions regarding our products and services, please do not hesitate to contact us

 or visit our FAQ’s.

Kirncroft Engineering Ltd. Wadworth Hill, Burstwick, Hull, United Kingdom, HU12 9EY
Telephone: +44 (0)1964 671 300