Petra design has supplied architectural precast concrete, cast stone and fiberglass products to residental and comercial projects. Petra design is located in Greater Toronto, serving Mississauga, Hamilton, and Oakville. Petra design provides shipping anywhere in Canada and USA. Contact us today and our team will be happy to assist you. Petra exterior architectural products are designed in a range of styles, textures, finishes and shades. This variation adds style and quality to residential and commercial properties. Petra Architectural products in caststone and precast include columns,window cills/sills, balustrades, corbels, quoin window and door surrounds and many more. This section includes samples of our architectural products for you to review.