The difference between standard and gallery canvas is the depth of the canvas.

A standard canvas has a depth of 2 centimeters (0.75 inches). This depth is common for many traditional canvas prints and provides a sleek, modest profile that works well for framed or unframed display.

A gallery canvas features a deeper profile, measuring 4 centimeters (1.5 inches) in depth. This thicker edge gives the artwork a more substantial and modern look.