JET TOP-90 Komfort RUND

TOP-90 comfort ROUND dome rooflight

The round dome rooflight for optimum energy efficiency

In addition to the square version, our tried and tested energy efficiency classic is also available as a round version with the 4-skinned TOP-90 comfort. It is ideally suited to both new constructions as well as refurbishments. In addition, its outstanding thermal insulation properties and excellent light transmission are particularly impressive.

The round TOP-90 comfort has a variety of applications. Depending on the additional accessories, this dome rooflight can be utilised with sun protection, fall-through protection or – with the corresponding opener drive units – as a ventilation system and/or SHEV system (LBO). In addition to this high level of functionality, it also impresses with its modern and aesthetic design.

  • 4-skinned
  • Two glazing variants: opal / clear / clear / clear or clear / clear / clear / clear
  • Rigid or ventable
  • Ventilation possibilities: manual, electrical, pneumatic
  • Can be utilised as a staircase SHEV device according to LBO with various 24V electric drive units and SHEV central units
  • Deliverable in diameters from 60cm up to 270cm
  • U-value = 1.5 W/m2K according to DIN EN 1873:2006
  • Ut Value = 1.5 W/m2K according to DIN EN 1873:2014
  • Urc,ref300 = 1.21 W/m2K according to DIN EN 1873:2014
  • Light transmission TL: 4-skinned opal: 65% / clear: 75%
  • Fire Class E according to EN 13501-1 (normal inflammable)
  • Plastic glazing (PMMA / high-quality UV resistant plastic)
  • Office buildings
  • Administration buildings
  • Residential buildings

Accessories for TOP-90 comfort ROUND dome rooflight


Fall-Through Protection Systems

SHEV and Ventilation