Series S4 – just safe is not enough
The high-performance system within the SÄLZER security door range. For highest security classes in forced entry resistance (up to RC 6), bullet resistance (up to FB7-NS), blast resistance (pressures up to 27,3 bar/500kg of explosives) plus optional fire and smoke protection up to ratings T90/EI90/S200. Nearly unlimited design variants. Multi-functionality without compromising design, elegance and comfort features.
Security classes:






The steel door won the German Design Award 2018. The steel door offers individual design options despite the high security properties. The German Design Award directly contributes to the overall commercial success. Prizes will only be awarded to projects that truly represent pioneering contributions to the German and international design landscape.
The following test video shows the forced entry test of the steel door, level RC 5/RC 6 at an accredited test institute.
» Technical data
Security doors steel series S4 |
Types | installation depth | glazing |
Types |
          |
Door leaf thickness
|
72 mm - 141 mm depending on the security level |
 Sizes |
Large doors are tested e.g. single door forced entry resistant in level RC4, leaf measurement 2,000 x 4,000 mm. Recommended door size up to 1.250 x 2.500 mm, size depends on the door leaf weight and on the place of installation (bi-metal effect). |
 Surface |
Galvanized and coated, over clad with timber, stainless steel, stone, bronze and other options. |
Furner technical properties |
Locks | fittings |
All locks which are approved in the tested security class of the door. Mechanical, electro-mechanical or motorized locks, single or multiple locking. Doors for emergency exits tested according to DIN 179 and DIN 1125 (panic bar) up to RC4. Applicable as interlocking door with special control system possible. All tested and certified fittings can be in-stalled in the respective security level. In resistant level RC5/RC6 equipped with an additional bolt work. |
Hardware | weight
|
Hinges are designed for high weights. Ease operation despite high leaf weights. Leaf weights up to 600 kg, turn wing gates up to 1,000 kg and sliding gates up to 5,000 kg leaf weight |
Threshold | door rebate |
T3-sided door rebate, alternative 4-sided door rebate. Threshold design: adjustable floor seal, bullet resistant floor connection or threshold, custom-made threshold in steel or stainless steel with/without seal, option: accessible entrance for people with impairments/disabilities (barrier-free). |
Frames
|
Corner frame (standard), block frame (for the flush installation into the opening), edge and counter frame (depending on the walll thickness available in 3 different versions). |
Installation |
Installation in several building materials is permitted. Bullet resistance: a bullet resistant wall connection is tested and recommended. |
*other or higher requirements upon request
» Download brochure: Steel doors series S4 