Mardome Circular Double Glazed Fixed Dome & KerbMardome Circular, as its name suggests is our round glazing unit which is specified for its distinct styling and character. It features a strong and robust, fully insulated GRP kerb. Product Specification Circular dome  Robust and weatherable GRP kerb  Single, double and triple skin units available  Non-opening and non-venting Standard sizes from 600mm up to 1800mm with GRP kerb  Can be supplied as a glazing only option   Single, double or triple skin units depending on the level of thermal insulation required  A choice of clear, bronze, opal and textured polycarbonate glazing is available