This range of Deep Edge Canvas offers the artist a good quality, acid-free, cotton canvas that has been double coated with primer. This range features a 38 mm deep edge frame. To accommodate trends, the edges are clean so that you can paint around the sides and there is no need for framing. Winsor Deep Edge is available in rectangular, square and maritime formats. Please note that all Winsor canvases are supplied with wedges. Wedges are used to expand the stretcher if the canvas slackens in adverse weather conditions. Wedges should be placed in the corners and tapped in with a pin hammer. The use of wedges is not a common requirement.