Very large oil paintings are expensive to ship as they need to be crated and shipped by common carrier rather then UPS, Fed Ex or US post office. Therefor they are painted pinned to a large board then rolled and sent in shipping tube. When you receive your painting you take it to a local framer and they stretch it on stretchers and can frame it if you wish to. The savings is huge.
Visit my types of commissions pages for more information on how i go about painting for you.
Below are some examples of very large oil paintings done as described above. A wide border is left for stretching and they can be painted as to hang unframed or framed.