If you require any assistance with product selection, please choose from the links below:

Thermal Efficiency

The range primarily reflects the level of thermal efficiency (Ud value) and hence its suitability for particular applications. It is recommended that the appropriate X-Range be selected first using its Ud value as a guide, followed by the required size, shape and glazing.

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Rooflight Specification Guide and Calculator

Standard Rooflight Specification Guide and Weight Calculator

Download this calculation software utility to assist you with specifying the correct Xtralite rooflight for your needs.

The calculation tool is available for download here