Lead lined and glazed custom built radiation protection observation windows for use in X-ray, CT examination rooms or radiation industrial use. X-ray protective viewing windows can be manufactured to suit any size of structural opening. Largest single lead glass sheet is 1100 x 2400mm, greater widths are available by the use of vertical leaded joining mullion. Radiation shielding frames are manufactured from hardwood including Ash, Mahogany, Oak, Beech, and Maple and can be supplied with a clear lacquer finish all with a lead core . Alternatively they can be supplied with one coat of primer paint for top coat finishing by others. Windows can be specified with x-ray protection lead equivalences ranging from 1mm to 3.5mm as determined by a Radiation Protection Adviser. Windows the require greater lead protection than 3.5mm can be created using multiple layers of lead glass.