Smoke damper, horizontal

Horizontal smoke damper

For closing openings in discharge shafts

Opens automatically in case of fire


Large format, single leaf, fire resistant smoke control damper especially designed for installation in air release shafts of RDA (RDA = Smoke protection pressure systems). The aim of the application is to keep safety staircases smoke-free. In case of fire the smoke control damper is opened automatically by the controls of the on-site RDA. Large-format cross-sections provide a clear, unobstructed air release area for fire gases. The closure is smoke-tight and provides fire resistance for 90 minutes.


  • Tested as a smoke damper
  • Fire resistance 90 minutes
  • Classification EI 120 (Ved – i ↔o) S500C10000 AAmulti
  • Smoke protection
  • Tight seal
  • Pressure / suction stable up to 500 Pa
  • Sound reduction index depending on size up to 36 dB


  • Single panel shaft closing with high mechanical durability
  • Flush-fitting assembly in solid wall and PRIOWALL with assembly frames
  • Free large format flow surface
  • External construction width from 1000 mm to 2.100 mm
  • External construction height from 379 mm to 1,000 mm
  • Rebated wooden door casing without gas spring: three sides 64 mm, lock side 139 mm
  • Rebated wooden door casing with gas spring: 2 x 64 mm and 2 x 139 mm
  • All round smoke and fire protection seals, automatically foams in the event of fire
  • High-quality stainless steel bands
  • Gas springs depending on the size of the damper leaf included

Subsequent, on-site painting of the smoke damper on the outside is possible.

Gas springs (depending on the size of the damper leaf)


Material characteristic

  • Non-combustible board with surface coating, classification A2 – s1, d0
  • Standard surface CPL
  • Standard colour light grey – similar to RAL 7035, coloured edges and chamfers

Dimension drawing

Scope of delivery

  • Smoke damper
  • Assembly frame
  • Chain drive with connector cable
  • Attachment material

Assembly details

Schematic diagrams, without scale, dimensions in mm


  • Opened and closed by chain drive
  • System voltage 24 V DC
  • Power consumption 40 mA, max. 1.2 A in cut-out torque
  • With integrated adjustable limit switches
  • Lock with power cut-off
  • Chain drive adjusted by software
  • Connector cable chain drive 6-pole, 3.00 m (2 conductors each for drive, limit and programming)
File name
Catalogue excerpt PRIODOOR ETX RDA H .pdf
Text for tender PRIODOOR ETX RDA H .pdf


Montageanleitung PRIODOOR ETX RDA H .pdf
Montageanleitung PRIODOOR ETX RDA H – dänisch .pdf

Brochure “Smoke dampers” .pdf

Revisionstool – For the exchange of driving and gas spring

Commissioning set – For functional testing and adjustment of the driving on site; consisting of: Connection box with 24V power supply, programming set