 When a customer brings in an oil painting, it is treated differently than a watercolor painting. Oil paintings, because they're painted on canvas, do not require glass to protect them. Watercolors, on the other hand, do require glass to keep them from fading. Oil paintings can be treated in two different manners. They can be one with a standard frame that has a rabbit, and what that means is the little part that covers up the edge of the canvas, or it can be placed in a floater frame. The floater frame allows the whole canvas to be seen, and the piece sort of floats inside of that frame.