Mats on a framed canvas

Mats are not generally used when framing art on canvas, but here's an exception. A fabric mat was glued to a rigid backing. The oil painting has a frame immediately surrounding it. That frame is glued and screwed (from the back) to the mat and then a larger version of the first frame was placed around the outer edge of the mat. This is a great way to make a small picture larger to fill a wall space.