This picture frame is made from lightweight aluminum making it sturdy, durable and great for creating a sleek, modern look and are offered in durable powder-coated finish colours. Tones mat board window’s edge is beveled, or angled. A reverse bevel makes the core will not be seen from the front of the mat. We use tempered glass is four to five times stronger than standard float glass of the same thickness. It has the added benefits of much greater durability and lightness.