Below are a few of our most popular 30x40 picture frames. WebPictureFrames.com specializes in custom picture frames for artists and hobbyists. We have a very large selection of wood and metal moldings by companies like Roma, Omega, Larson Juhl and Framers Inventory. We also sell 30x40 plein air frames. If you don't see what you're looking for below, please browse our inventory HERE. We can build a 30x40 picture frame from almost all of our moldings.