To change the size of a mat opening, you will need to upload your images into our software after selecting the outer dimensions of the mat you would like to order here.
Once the files have uploaded, you can hover over the images in the center and a dark gray bar will appear.
Click on the ‘layout’ button in the dark gray bar and the available opening sizes will appear across the bottom of the screen.
Select the option you would like and then place your order.
For more information, please call us at 1-888-966-9539 or send an email to support@zno.com.