An open back ready-made frame is a standard sized picture frame. When you order a ready-made frame from pictureframes.com, you're saving money! That's because we've preassembled these frames to fit the most popular and frequently occurring sizes for artwork, photography and documents. At pictureframes.com, these sizes include (in inches): If the artwork you are framing has different dimensions than those listed below, order a Custom-Made frame for the perfect fit!