FRD III

FRD III rebated steel doors are designed for interior applications in technical, administrative, industrial and residential buildings. Depending on project requirements, they are available in non-fire-rated, fire-rated or acoustic configurations. Their robust construction, flexible hardware options and broad range of finishes allow the doors to be tailored to operational and architectural requirements.

Choose door type

Non-fire-rated

Robust FRD III interior steel doors for applications where fire resistance is not required. The rebated construction combines reliable everyday operation with flexible hardware and finish options.
Acoustic

Acoustic FRD III steel doors for interior applications requiring effective sound insulation. The sealed rebated construction provides sound reduction up to 36 dB for single-leaf and 38 dB for double-leaf configurations.

Fire-rated

Fire-rated FRD III steel doors for interior applications, with classifications up to EW 30 / EI 30. The robust rebated construction supports optional smoke control and project-specific hardware and finishes.

Fire resistance

Smoke tightness

Ballistic resistance

Security class

Thermal transmittance

Cyclicality

Description

Configuration options

non-insulated version
thermally insulated version, U-value down to 1.7 W/m²K
with ventilation grille
with glazing
ATEX version
X-ray shielding insert

Standard equipment

lock
door hinges

Frame types

wrap-around frame
corner frame
insert frame

Optional accessories

door hardware
door closer
panic lock
panic exit hardware
electric strike
electromechanical or motorised lock
automatic drop seal, sealed threshold or floor brush
Simonswerk VX door hinge
magnetic contact for door status monitoring
hold-open magnet

Finishes

galvanised steel sheet
powder coating in a RAL colour
stainless steel version

Selected parameters

Technical list Contact us

years of experience in technical door solutions

125,000+

manufactured and installed doors

different types of resistance in one solution

We will advise you on selection and design.

Together, we will review your requirements and propose a suitable solution within our production capabilities. We are ready to consult technical details, certifications, and applications for your specific operation.