White mount in exactly the size you need. Our mounts are 2 mm thick, made with high quality cardboard
Choose the exact measurements
The outer dimensions are the dimensions of the frame - and actually also the dimensions of the glass.
The inner goal that you choose is exactly the inner goal that you get. We recommend that you subtract 1 cm from the height and width of the inner measurement, so that you get 0.5 cm all the way around to attach the image to the back of the mount. If you have a 30x40 poster, you must therefore choose 29x39 as the inner size.
When you buy an additional mount for a frame with standard dimensions, we deduct the one centimeter ourselves. But we don't do that here when you order a mount by itself or one of our custom frames.