10-point locking steel security door

From £280.00

Experience the ultimate security with Kirncroft doors. Our 10-point locking steel security doors are built with a superior locking system, thicker steel gauges, and upgraded hardware as standard.

For your modular, industrial, and commercial projects, don’t settle for anything less. Priced from just £280, these doors are available in sizes ranging from 890mm to 1210mm wide and finished in grey primer.

With the added strength of Korestrength® technology, our doors provide heavy-duty protection as standard. Backed by a two-year warranty, PAS24 certification, an injected polyurethane core (U-value of just 1.8), and a 1⭐️ Kitemark equivalent lock cylinder, it’s clear why thousands trust Kirncroft security doors to safeguard their premises.


Lead Times

  • Stock door – 2 days + delivery
  • Door with extra hardware fitted – 3 weeks + delivery



The original, heavy duty, 10-point locking steel security doors.

Kirncroft Korestrength® steel doors offer the optimum mix of high build quality, high material specification and high-quality hardware for an excellent price.


High-security locking system.

Having been subjected to over 20 years of real-world development, you can be sure that our custom 10-point locking system will perform when it matters.


“Better than 1⭐️” Kitemarked lock cylinder as standard.

We tested a 1⭐️ Kitemarked cylinder in-house, and we felt it wasn’t good enough, so we made some improvements.


High-specification material selection.

Constructed using 1mm galvanised steel for the door skins, 2mm galvanised steel for the frame, 1mm galvanised steel for the subframe and 10mm galvanised steel rebar reinforcements. Our 10-point locking doors never fail to impress when resisting physical attacks.



Polyurethane-injected foam insulation to both the door and frame means that our doors offer high-performance insulation values and add to the door leaf’s strength and rigidity.


Two-year warranty.

We offer a two-year warranty as standard.


Designed with containers and modular buildings in mind.

Designed with tolerances that allow for “racking”, our products work seamlessly with modular and container builds.


Door skin steel1mm galvanised steel
Door frame steel2mm galvanised steel
Frame threshold1.7mm 304 grade stainless steel - Part M disability compliant (Step threshold on flange doors)
Door leaf subframe1mm galvanised steel
Door frame depth90mm
Door leaf depth45mm
Strengtheners (910mm door) 10mm galvanised steel rebar
Strengtheners (other sizes) 4mm galvanised steel roundbar mesh
Hinges304 grade stainless steel ball bearing hinges
Hinge fixing plate5mm thick anodised steel
Locking systemKirncroft custom specification 10-point locking system
Lock cylinderKirncroft customised 1* kite-mark equivalent anti-drill euro cylinder
Lock reinforcing2mm galvanised steel reinforcing box
Locking rodsGalvanised steel
Locking rod tubes304 grade stainless steel
Anti-jemmy flange (910mm and 11110mm doors)2mm profiled galvanised steel
Lock face plates304 grade galvanised steel
Lock keep plates304 grade stainless steel
Handles304 grade stainless steel "return to door" handles
Door insulationInjected polyurethane foam
Frame insulation Injected polyurethane foam
Hydraulic closer reinforcing2mm galvanised steel plate

Size Details

Frame size (mm)Internal size (mm)Clear opening at 90° (mm)

Frame depth – 90mm

*Flange doors – Subtract 30mm from internal height


Thermal insulation U value1.8 W/m2K
Resistance to repeated opening and closing50,000 cycles
10-point locking system200N operating force for 200,000 cycles
Acoustic rating– 32 (-2;-7) dB
Stainless steel lever handles100N operating force for 200,000 cycles & high corrosion resistance
Stainless steel hinges200,000 cycles & high corrosion resistance






Fitting instructions

Kirncroft door fitting instructions


Door frame fixing hole positions




Weatherkit fitting instructions


Vision panels 

Typical vision panel positions


Technical diagram

10pt locking door technical diagram

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