Security door SD 4
- Fire class: EI15EW60, E60
- Sound reduction: 40 dB
- Security class: RC4, EN1627
- Thermal performance: U-value 3.8W/(m2.k)
Complete security door of the highest security class
The SECURITY DOOR SD4 is the highest rated door in the steel door range and in steel profiles we manufacture Mk5, in accordance with the European standard EN 1627. Thanks to the unique design, MaxiDoor is the only Swedish manufacturer that can supply an approved RC4 safety-rated door, with only one locking point (Assa 7787), is also approved with the Exma Rapid motor end, which provides the possibility to connect to card readers and door automation. The SD4 is available in bulletproof FB6(NS) and explosion-proof (EXR3) version, both as a single and double door.
Size single door max dimensions: 13 x 30
Size pair door max dimensions: 24 x 30
Type approval: 0923
Security door based on desired level of security
A steel security door is basically a reinforced fire door. We offer protective doors in different security classes (SSF class 1, 2, 3). Security doors with different protection classes can be a requirement from different insurance companies but also a security for the property owner and the user. Fireproof, classified and bulletproof doors are also needed at airports and other places where personal safety needs to be extra carefully protected.
We are happy to answer your questions
Sell tight steel doors
+46 581 377 88
+46 70 220 68 39
Stop threshold, Executable threshold plate, Thresholdless workmanship, Mechanical sealing threshold.
A-frame: with lining on the G and A sides, for wall thickness from-to-mm. B-frame: feed formation on the G-side. C-frame: stealth frame without lining.
Others to the wall
Installation zones, terminal block, kick protection, sealing strip, door closers, magnetic contacts, end-of-power, end-of-life, motor locks, lock piston caps, water deflectors and more.
Security Door SD4 Specifications
Color & Design
All options & accessories
The door leaf is made of 2 mm steel sheet in the door box with a reinforcement frame at the outer edges of the door. The front panel is 3 mm thick and the door is insulated with mineral wool. The door has hardened hinged pins.
The door can be manufactured in both single and double versions. Size reaches 1300 x 3000 mm in single design and maximum 2400 x 3000 mm in double version.
Hot-galvanized, untreated steel sheet or acid-proof stainless steel in grade EN 1.4404 (SS2348). Transport protection painted or optional powder coating in any RAL colour, NCS or Textured paints.
The frame is made of heavy duty 2mm steel sheet. Frame parts and threshold are welded to a mold-stable unit, ready to be mounted into the wall without further assembly at the mounting site.
A-frame: with lining on the G and A sides. B-frame: fords on the G-side. C-frame: stealth frame without lining.
Either 1 Assa 7787/9787-50 or 2 Assa 410/411/710/711 or Dorma variants. Approved from both the stop and the hinge side.
Stop threshold, Executable threshold plate, mechanical sealing threshold or thresholdless workmanship.
Other options and solutions
Pair door available with either garage rule Fix 560 or edge rule 1396/2396 Installation zones (also available in bulletproof design) Hinge grease nipples
40 dB (for single door with sealing threshold)
The front door is CE marked according to door standard SS-EN 14351-1.
See more doors
We offer protective doors in different security classes (SSF class 1, 2, 3).
Steel glass partitions
Entrance solutions and other solutions with glass surfaces that should maintain high quality and function over time.
Well thought out and customized metal and glass profile doors for public environments.