Vertical uPVC rooflight kerb, with a double glazed, flat glass top. The object has parametric values for length and width, and a drop down list for its height, based on a number of modular planks. Other 'tick box' options (data only) are available for various ventilation options, and a foot options.
High performance U-value, wide range of sizes, vent, and kerb fixing options,
Rectangular / square on plan, with flat top