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t90 Deckenklappe THF

Fire resistance ceiling access hatch

System Schröders THF

Single-leaf fire resistant ceiling access hatch T90-1
Fire resistance T90
Allgemeine bauaufsichtliche Zulassung Nr. Z-6.20-2061, DIBt Berlin

Combinable with additional performance characteristics:
Smoke control
(optional) 		tested according to DIN 18095 RS-1
Allgemeine bauaufsichtliche Zulassung Nr. Z-6.20-2061, DIBt Berlin
Burglar resistance
(optional)

RC2 - expert report No. 45-47/22.126, PIV-Velbert
RC1 - expert report No. 45-47/22.126, PIV-Velbert

according to DIN EN 1627 ff

Acoustic performance
(optional)

Bis RW (C;Ctr) = 42 (-1;-3) dB*
according to EN ISO 10140-1 / EN ISO 10140-2 / EN ISO 717,

measurement report81 16 48 52 29 -10, TÜV Nord

*Due to the permissible measurement range of the ceiling access hatch, the maximum sound insulation value of RW RW (C;Ctr) = 45 (-1;-3) dB stated in the test report
is reduced by 3 dB to the above-mentioned value of RW RW (C;Ctr) = 42 (-1;-3) dB.
See expert assessment SEII-16-0211-Hrd, TÜV Nord

Thermal transmittance
(optional)

UD-value ≥ 1,7 W/(m²K) according to EN ISO 10077-1

Airtightness
(optional)

up to class 4 according to EN 12207 (± 600 Pa)

expert report 40-14/26, PIV Velbert
Resistance to positive and negative pressure
(optional) 		according to DIN EN 12211 (up to 5,000 Pa)
expert report No. 16-003037-PR01
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)
width from 500 mm up to 1,100 mm
length from 500 mm up to 1,350 mm

deviating special sizes possible with corresponding individual proof under building law
Flap leaf

leaf thickness 68 mm - smooth double-walled
plate thickness 1.0 mm

  • thin rebate design

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

with flush clipped in Thelesol® fire protection strips and elastic rubber seal

corner frame

  • optional enclosing frame
  • optional block frame
Hinges

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

single locking according DIN 18250

  • optional profile cylinder prepared (cylinder on-site)
Walkability
(optional)
  • with grating cover made of steel or aluminium
  • with chequered plate 3 mm made of steel or aluminium
Self-closing and
opening assist

adjusted to the flap weight
- easy opening (max. opening angle 75°)
- closing speed regulation

Closing delay
(optional)
  • continuous adjustment of the closing process
    enables unhindered passage
Installation
  • in fire-resistant ceilings made of reinforced concrete according to DIN 1045-1(thk ≥ 140 mm)
Label

mark of conformity - "Ü"
according to German conformity mark regulation

Optional
  • additional security devices possible
    (magnetic contact, bolt contact, e-opener...)
  • Hold-open device according to DIN EN 14637

The information provided relates to standard equipment variants. When combining different performance characteristics, customised equipment may be required.

The licensed System Schröders manufacturers will be happy to consult you on planning your requirements.