Profile: Royal Windows manufactures custom-made window treatments for building contractors and interior designers. Our product line includes 2" royal wood, 2" curved PVC, royal arch, 2" imperial wood, 1" crown aluminum, quarter royal arch, 2" envirowood and smart arch. Our smart arches are made as 1/2 circles and feature quality, moveable 2" wood louvers & come with 1 3/4" molding.