open the System Schröders - door
Mehrzweck Deckenklappe DKN-2

Multi purpose ceiling access hatch

System Schröders DKN-2

Double-leaf internal or external multipurpose ceiling steel flap

CE-Zeichen labelled

Installation in internal ceilings
(optional)

according to DIN ENV 14351-2

Installation in external ceilings
(optional)

according to DIN EN 14351-1

Combinable with additional performance characteristics:
Burglar resistance
(optional)

RC4 - expert report No. 22-7/15.125, PIV-Velbert
RC3 - expert report No. 22-6/15.125, PIV-Velbert
RC2 - expert report No. 45-48/22.122, PIV-Velbert
RC1 - expert report No. 45-48/22.122, PIV-Velbert

according to DIN EN 1627 ff

Acoustic performance
(optional) 		according to EN ISO 10140-1 / EN ISO 10140-2 / EN ISO 717
bis RW (C;Ctr) = 45 (-0;-3) dB
measurement report820SST298/8000675260-1-13, TÜV Nord, TÜV Nord
Siehe Gutachtliche Beurteilung 820SST298-Hrd - TÜV Nord  
 
Thermal transmittance

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

Airtightness
(optional)

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

expert report No. 40-40/12.122, PIV Velbert
Resistance to wind load
(optional)

up to class C5 according to EN 12210 (± 1.600 Pa)

expert report No. 40-40/12.122, PIV Velbert
Resistance to positive and negative pressure
(optional)

according to DIN EN 12211 (up to 3,800 Pa)

expert report No. 40-52/16.120
Explosion protection
(optional) 		Logo ATEX For installation in potentially explosive areas, please see confirmation letter Explosion protection ATEX for hinged doors System Schröders (in German language) (PDF)
Technical description
Dimensions
(standard building dimensions)

limitations on additional performance characteristics possible
e.g. airtightness and/or watertightness, limited to

width from 500 mm up to 2,500 mm
length from 1,000 mm up to 2,500 mm

deviating special sizes possible, subject to individual confirmation
Flap leaf

leaf thickness 68 mm to 69 mm - smooth double-walled
plate thickness 1.0 mm to 1.5 mm

  • thin rebate design
    • optional thick rebate
    • insulating insert
      • optional full-face glued and pressed with cover plate,
        thus particularly smooth and even door leaf
Frame frame-system "ZNG" or "ZG"

seal depending on performance characteristics

  • elastic rubber seal

corner frame

  • optional enclosing frame
  • optional block frame
Hinges

2 concealed door hinges
thus smooth surface without tripping edge

no concealed hinges for burglar resistance with top attack side

Fittings

top side: embedded folding ring shell
lower side: handle
various fittings possible

for burglar resistance with top-mounted lever handle ES1 on the attack side

Locking

various locking systems possible

active leaf

single locking
profile cylinder prepared (cylinder on-site)

fixed leaf

folding bold

Walkability
(optional)
  • with grating cover made of steel or aluminium
  • with chequered plate 3 mm made of steel or aluminium
  • other designs for the top layer available on request
Opening assist

gas strut

  • adjusted to the flap weight
  • easy opening
  • keeping open at an angle of approximately 90°
  • prevents from falling shut uncontrollably and makes it easy to step through
Installation
  • in concrete
  • in aereated concrete
  • in special ceilings
  • optional flush installation
Label

CE-Zeichen labelling and declaration of performance for external ceiling access hatches

Optional
  • additional security devices possible
    (magnetic contact, bolt contact, e-opener...)
  • stainless steel design
  • further specifications available on request