We offer the gallery series unframed painting, the paintings be stretched on the 3.5 cm deep stretcher bars, they don't need the picture frame and hang it on the wall. You can choice any paintings to make them in the gallery series, also we offer variety stretcher for you . If you need we stretch the paintings, it just add a few charge fo the service, But the cost of ship will be little expensive, as after stretched the volume will be increase. also we can just send the stretcher strip with the oil paintings, then you can assemble it by yourself, it very easy to assembly