VELUX smoke exhaust and exit dome
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CSJ 1211, ISJ--

Staircase smoke exhaust/exit

From £XXX incl. VAT

For roof pitch 0-15°

A simple flat roof solution for staircases that offers automatic smoke exhaust and an additional roof exit. Available in 2- or 3-layer acrylic or polycarbonate dome skins and with an electrical and smooth opening function up to 85°.
  • Daily comfort ventilation with purchase of control switch
  • Free cross-section of min. 1,0 m²

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A simple flat roof solution for staircases that offers automatic smoke exhaust.

Product details

The steps below will guide you through your product options.

Choose a top unit

Acrylic- or polycarbonate dome skins in opaque surface provides diffused daylight, improving the light needed for working.

2-layer dome skins

2 layer dome is suitable for uninhabited rooms. Available in acrylic or polycarbonate.
VELUX dome, 2 layer glass

3-layer dome skins

3 layer dome for more insulation in uninhabited rooms. Available in acrylic or polycarbonate.
Dome 3 layers glass

Base unit

Comes with smoke exhaust PVC base unit. With purchase of the control unit and wall switch, the dome can be operated via the wall switch for daily ventilation & better indoor comfort. With the opening function of up to 85°, the Staircase smoke exhaust & exit dome provides an extra access to the roof e.g. for maintenance.

VELUX base unit

Smoke exhaust accessories

Smoke sensors, control system and break glass units to be purchased separately. 

Control unit

For operation of up to four flat roof smoke exhaust domes.
KFC 100J
Control unit

Smoke detector

For early fire detection.
KFA 100


Break glass point

For activating the smoke exhaust function.
KFK 100-104

Brake glass point

Possible installation add-ons


Securing kit

Frame fixing kit for secure mechanical fixation of the roofing material to the window frame.
ZZZ 210J
VELUX dome, Securing kit

Lining

Lining for flat roof. This all-in-one solution includes PVC panels, vapour barrier and facings.
LSF 2000
VELUX dome, lining

Wall switch

For daily comfort ventilation.
KFK 200


Wall switch

Unsure of what product to choose?

Sizes and prices

Windows are available in the following sizes (W x H)



120x120


150x100
Code Description

120120

150100
Top unit
 ISJ  0102 2-layer acrylic dome skin    
 ISJ  0103 3-layer acrylic dome skin    
 ISJ  0112 2-layer polycarbonate dome skin    
 ISJ  0113 3-layer polycarbonate dome skin    
Base unit
 CSJ  1211 Vented base unit 30 cm    
Installation accessories
 ZZZ 210J Securing kit for roofing material    
 KFC 100J Control unit (4,8 A)  for operation of up to 2 staircase smoke exhaust/exit domes    
 KFA 100 Smoke detector    
 KFK 200 Wall switch for daily ventilation    
 KFK 100-104 Break glass point    
 LSF 2000 Lining for flat roof    
All prices are incl. VAT.

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