SISTI ENGINEERING SRL
Via Fontana 18/A
20122 Milano – Italia

Burglar-proof doors certified in class C4

Products

Burglar-proof doors: absolute security at critical entrances

Sisti Engineering's burglar-resistant doors represent high-end solutions, designed to meet the most advanced passive security needs: from access protection to escape route control, and even access management in high-value strategic or asset-related contexts. Each product embodies a philosophy consolidated over 65 years ago, based on manufacturing excellence, full regulatory compliance, and a high degree of customization.

Where are burglar-proof doors installed

Sisti Engineering's burglar-proof doors are designed for contexts where perimeter security requires the highest level of reliability and control.

Banks and financial institutions

Main entrances, cash-handling areas, storage rooms and vaults

Jewellery shops and gun shops

High-risk access points and secondary openings

Barracks and institutional headquarters

Access control and protection of restricted areas

Office buildings

Protection of escape routes, in particular external safety stairs with anti-intrusion devices from below

Server rooms and data centers

Management of access to critical infrastructure, often subject to specific insurance requirements

Warehouses and valuables stores

Emergency exits in structures intended for the storage of goods with high intrinsic value

Fair compromise

Customization without sacrificing resistance

Sisti Engineering's burglar-resistant doors offer a high degree of customization, both in terms of dimensions and surface finishes, including high-quality cladding. This design flexibility is complemented by excellent construction standards in terms of mechanical resistance, durability, and adaptability, which distinguish them nationally. Each custom solution is developed in full compliance with the declared performance levels, maintaining the burglar-resistant certification level required for the reference series.

Useful and functional doors

Dual function: burglar-proof security and escape route

A distinctive element of Sisti Engineering's burglar-proof doors is their dual function: guaranteeing protection against intrusions from the outside and, at the same time, ensuring a safe escape route from the inside in emergency situations. The panic bar allows immediate opening towards the outside with a simple pressure, without the use of keys or codes, in full compliance with the regulations on escape routes. A balance between resistance and accessibility that requires rigorous design and consolidated skills, gained by Sisti Engineering in over 60 years of experience.

Certified doors

Quality verified, safety guaranteed

Like all products in the range, Sisti Engineering's burglar-resistant doors not only pass the required regulatory approval tests, but are also subjected to rigorous internal quality and safety testing, defined according to performance standards exceeding legal requirements. The quality management system has been ISO 9001:2015 certified since 2004 (certificate no. SQ041804), guaranteeing a controlled, traceable, and excellence-oriented production process.


Product range

Discover the burglar-proof doors

Series BSA 216 C4

Burglar-proof external pedestrian door for escape routes CE Marked – Class C4
In accordance with the EN 14351-1:2016 + A2:2016 – EN 1627:2011 standards

  • Frame with a high moment of inertia section, made of 2.5 mm-thick shaped galvanized steel profile, with seats for EPDM gaskets, one in correspondence with the push side and an additional gasket in correspondence with the stop cover on the opposite side.

13 brackets with bolts for surface fixing the frame to the wall hidden by a profile, to be positioned after anchoring the door, on the three internal sides of the frame

The frame is shaped to lie flush with the door on the hinge side.

  • Door in 1.5 mm-thick galvanized steel sheet, boxed and press-folded around the perimeter in such a way as to form a stop that is solid, resistant, safe and elegant.

The frame is reinforced in the internal of the perimeter with an intermediate crossmember in sturdy T-profile steel.

Additional 2 mm-thick manganese steel sheet inserted internally to protect the entire surface of the external pull side of the door.

Multilayer internal insulation, using panels with specific characteristics to obtain great bending and torsional rigidity, glued directly to the sheets.

The total thickness of the door is 65 mm.

  • On the internal side of the door, in contact with the floor, there is a steel profile with an anti-intrusion function, designed to prevent fraudulent activation of the panic bar using tools inserted under the lower edge of the door. Automatic external lower door seal applied on the above-described profile.

 

Two safety bolts mounted laterally on the door leaf.

Three CE-marked hinges with grade 14 in accordance with the EN 1935 standard: 200,000 cycles with a mass of 160kg on each individual hinge, made from three-winged steel machined from solid billet and equipped with a thrust bearing, sized for practically unlimited duration even under the most severe conditions of use.

CE-marked three-way lateral lock, with automatic reset when the door is closed, with the three bolts engaged in the master frame to a total depth of 20 mm.

CE-marked panic bar on the push side.

On the pull side of the door, the following can be ordered as optional extras: fixed doorknob and anti-drill half cylinder protected by a manganese defender.

Surface treatment with RAL 7035-coloured primer.

Two safety bolts mounted laterally on each door leaf.

Three CE-marked hinges on each door with grade 14 in accordance with the EN 1935 standard: 200,000 cycles with a mass of 160kg on each individual hinge, made from three-winged steel machined from solid billet and equipped with a thrust bearing, sized for practically unlimited duration even under the most severe conditions of use.

The main door has a CE-marked three-way lateral lock, with automatic reset when the door is closed, with the three bolts engaged in the master frame to a total depth of 20 mm.

CE-marked panic bar on the push side.

On the pull side of the door, the following can be ordered as optional extras: fixed doorknob and anti-drill half cylinder protected by a manganese defender.

The secondary door has a CE-marked counter lock with a self-locking flush bolt device during closing and a lever for opening. Surface treatment with RAL 7035-coloured primer.

Contacts

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