MASSIVApassiv 
 Wood Windows 

Even more robust, even safer: The unprecedented wood thickness of the MASSIVApassiv line makes it the powerhouse in the KATZBECK wooden window collection. Fittings with break-in resistance as a standard feature and the outstanding stability of the casements and frames impart a comforting sense of security in your own four walls.

But there’s far more than that as well: Compatible with passive house standards and providing 100% natural thermal insulation, MASSIVApassiv also ensures efficient protection against thermal dissipation and unnecessary heating costs.

Best value, sound insulation:

Rw 45 (-1;-5) dB

Break-in resistance

RC2

Surface colours

according to the KATZBECK colour collection or customer design

Engineering features

classic wooden windows in a sophisticated, durable design and a solid thickness