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Franzen Feuerschutztüren GmbH
Gerhard-Welter-Str. 7
D-41812 Erkelenz

phone +49 (0) 2431-80070

Franzen - ceiling flaps

Double-leaf multi purpose ceiling flap DKN-2

Franzen Deckenklappe DKN-2
Double-leaf multi purpose ceiling flap
Installation in internal ceilings

according to DIN ENV 14351-2 CE-Zeichen marked

Installation in external ceilings

according to DIN EN 14351-1 CE-Zeichen marked

Thermal transmittance

UD-value ≥ 1.2 W/(m²K) according to EN ISO 10077-1

Burglar resistance

RC4 - classification report no. 22-5/15.119, PIV-Velbert
RC3 - classification report no. 22-4/15.117, PIV-Velbert

according to DIN EN 1627 ff

Acoustic performance
according to EN ISO 10140-1 / EN ISO 10140-2 / EN ISO 717
up to RW (C;Ctr) = 45 (-0;-3) dB
measurement report 820SST298/8000675260-1-13, TÜV Nord, TÜV Nord (de)
expert opinion 820SST298-Hrd - TÜV Nord (de)
Air tightness

up to class 3 according to EN 12207 (up to 600 Pa)

expert opinion no. 40-40/12.120, PIV Velbert
Resistance to wind load

up to class C4 (up to 2,000 Pa) according to EN 12210

expert opinion no. 40-40/12.120, PIV Velbert
Resistance to positive and negative pressure

up to 3.800 Pa according to DIN EN 12211

expert opinion no. 40-52/16.120
Ability to release
according to EN 179
Explosion protection
Logo ATEX For installation in potentially explosive areas, please see confirmation letter Explosion protection ATEX for Franzen hinged doors (in German language) System Schröders (PDF)
Technische Beschreibung
(rough building dimension)

for performance characteristic airtightness, resistance to wind load, watertightness or resistance to positive and negative pressure limited to

width up to 2,500 mm
height up to 2,500 mm
Flap leaf

leaf thickness 69 mm - smooth double-walled
plate thickness 1.0 mm to 1,5 mm

  • frame-system "ZNG" with flush clipped in profile strips
  • or
  • frame-system "ZG"
  • frame four-sided surrounding
  • (see installation variants)
  • corner frame
  • optional enclosing frame
  • optional block frame

with elastic rubber seal
(seal type depending on performance characteristic)


concealed door hinges
thus smooth surface without tripping edge


Top side: embedded folding ring shell
Lower side: handle

Lock options
Active leaf

single locking according DIN 18250

  • optional profile cylinder prepared (cylinder on-site)
Fixed leaf

various locking systems possible

  • with grating cover made of steel or aluminium
  • with checker plate 3 mm made of steel or aluminium
  • further designs for upper covering on request
Opening assist

gas spring
- adjusted to the flap weight
- easy opening

  • in concrete ceilings
  • in special ceilings on request
  • optional blunt installation in soffit
  • optional installation on the wall plate

external ceiling flaps CE-Zeichen marked according to EN 14351-1

  • lock control
  • powder coating in RAL colors
  • special solutions according to request and customer requirements

The information given refers to the usual configurations. Individual configurations may be required when combining different performance characteristics.

Our team will be happy to assist you with the individual planning of your requirements.

  • Deckenklappe DKN-2
    Franzen DKN-2double-leaf ceiling flap 

DKN-2 Downloads