Types of the alwitra rooflightsAs standard, alwitra rooflights are available as double-shell, triple-shell or multi-shell versions with additional thermal insulation properties. The thermally insulating version provides optimum thermal protection as well as outstanding lighting of the room through efficient light dispersion and low light loss. alwitra rooflights are equipped with a burglary-retardant screw system. Opening […]Read more
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