If you are installing your graphics over an entire area from edge to edge you are best to select ‘finished with an extra 20mm bleed on top, bottom & RHS’, this allows you to align the graphics to the left, and then trim back on the top, bottom and right-hand side to ensure complete coverage.

If you are not covering from edge to edge of an area, you should select ‘Your exact measurements’

If you are unsure, please contact us for further help.