Optimal Office 80 Loft Line Fire

Optimal Office 80 Loft Line Fire is a muntin bar, fire-resistant, double-glazed system of aluminum and glass. 

The Rw 45dB acoustic insulation, use category IVc according to ETAG003, confirmed by the Building Research Institute, proves the versatility of the Optimal Office 80 LoftLine Fire system walls in modern offices, industrial buildings, and production halls. 

This system is available in the EI30 fire protection version. 

The safety of use of the Optimal Office 80 Loft Line and Optimal Office 80 Loft Line Fire systems, is confirmed by the European Technical Assessment issued by the ITB Technical Assessment Department. 

Sound insulation

  • Rw 45dB 

Versions / equipment / options 

  • solid glass door 
  • wooden doors 
  • single-glazed aluminum profile doors 
  • double-glazed aluminum profile doors 

Fire insulation 

  • EI30

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