ATM-FB4-RC4 Security Door: Technical Analysis of a Bullet-Resistant, Burglar-Resistant and Blast-Resistant Door According to European Standards
Modern security facilities require entrance systems capable of providing protection against multiple threats simultaneously. A security door installed in a government facility, financial institution, industrial site or protected room must withstand ballistic attack, forced entry, blast pressure and air leakage while maintaining reliable daily operation.
The ATM-FB4-RC4 Security Door has been developed as a multi-standard security solution that combines ballistic resistance, burglary resistance, blast resistance and gastight performance within a single door assembly. Product information is available in the official product page:
Purpose of the Door
The ATM-FB4-RC4 Security Door is intended for facilities where physical protection of personnel and critical infrastructure is required. Typical applications include:
government buildings;
military facilities;
police stations;
critical infrastructure;
secure rooms;
industrial facilities;
protected technical rooms.
The product is designed to combine several certified protection functions into one door system rather than relying on independent protective elements. SHELTER
Certified Security Standards
The door incorporates several European protection standards.
1. Bullet Resistance – EN 1522 Class FB4
The ballistic protection complies with EN 1522 Class FB4.
EN 1522 is the European standard defining ballistic resistance classes for doors, windows and protective structures. Class FB4 represents protection against specified handgun threats tested according to the EN 1522/1523 methodology. SHELTER
2. Burglar Resistance – EN 1627 RC4
The door also complies with:
EN 1627 Class RC4
RC4 is a certified burglary resistance class intended for protection against experienced intruders using professional tools during forced entry attempts. The ATM-FB4-RC4 door integrates this resistance level with its ballistic protection. SHELTER
3. Blast Resistance
The product is specified with:
Blast Resistance EPR2
tested according to:
EN 13123-1
EN 13124-1
These European standards define blast resistance performance for doors subjected to explosion pressure. SHELTER
4. Gastight Performance
The door is rated:
Class 4 according to EN 12207
EN 12207 classifies air permeability of building components. Class 4 represents the highest air-tightness classification under this standard. SHELTER
Mechanical Locking System
According to the manufacturer, the ATM-FB4-RC4 Security Door is equipped with:
mechanical security lock;
3 movable locking points;
3 fixed locking points.
This multi-point locking configuration distributes closing forces around the door perimeter and forms part of the certified security construction. SHELTER
Clear Opening Dimensions
The standard clear opening dimensions are:
Width: 900 mm
Height: 2000 mm
These dimensions are specified by the manufacturer for the standard product version. SHELTER
Exterior Finish
The standard finish consists of:
MDF panel
with various color options available.
The decorative finish allows the security door to integrate into different architectural environments without changing its certified protective characteristics. SHELTER
Integrated Protection Concept
Rather than providing only ballistic resistance, the ATM-FB4-RC4 Security Door combines several protective functions:
ballistic protection;
forced-entry resistance;
blast resistance;
gastight sealing;
mechanical multi-point locking.
This integrated approach reduces the need for separate protective systems installed around the entrance opening. SHELTER
Technical Specifications
Parameter | Specification |
Ballistic resistance | EN 1522 Class FB4 |
Burglar resistance | EN 1627 RC4 |
Blast resistance | EPR2 |
Blast standards | EN 13123-1 / EN 13124-1 |
Gastight performance | EN 12207 Class 4 |
Lock | Mechanical safety lock |
Locking points | 3 movable + 3 fixed |
Clear opening | 900 × 2000 mm |
Finish | MDF panel (various colors) |
All values above are taken from the official product specification. SHELTER
Advantages
Based solely on the published manufacturer specifications, the ATM-FB4-RC4 Security Door provides:
certified ballistic resistance;
certified burglary resistance;
certified blast resistance;
certified gastight performance;
multi-point mechanical locking;
standard architectural opening dimensions;
decorative MDF finish available in multiple colors.
These characteristics make the product suitable for projects requiring compliance with multiple European security standards simultaneously. SHELTER
Conclusion
The ATM-FB4-RC4 Security Door is engineered as a certified protective door system combining EN 1522 FB4 ballistic resistance, EN 1627 RC4 burglary resistance, EPR2 blast resistance, EN 12207 Class 4 gastight performance and a six-point mechanical locking mechanism (3 movable and 3 fixed points). According to the manufacturer, the standard clear opening is 900 × 2000 mm, and the exterior finish is provided with an MDF panel available in multiple colors. These documented characteristics position the product as a solution for facilities where several layers of certified physical protection are required within a single entrance system. SHELTER
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