How are print sizes listed?

Prints are available in a range of sizes depending on the dimensions and resolution of the artwork, with the dimensions determining the sheet size and the resolution determining how large the image can be printed. The size listed refers to sheet size, is measured in inches, includes at least one inch of white border, and will vary to accommodate each piece, ranging from the smallest available print at 4 x 4 inches to the largest at 24 x 36 inches. Margins may exceed one inch to accommodate the artwork's dimensions, or may appear to exceed one inch if the printed area includes additional white space as part of the artwork.