This is an original watercolor painting by Sandy Drexel. This was painted on Arches 140# watercolor paper and measures 16" x 20". You will need a mat that is at least 2" and we recommend you do a double mat. You would then need a frame that is at least 20" x 24". This large flower has very defined edges and a green background and your framer would be able to adjust the size the frame to meet your needs.