Mat opening/mat Window The part of the mat that will be cut out the allow the image to show through. This measurement needs to be approximately 1/16" to 1/8" smaller on each dimension in order to keep the image from falling through, or the white space around the image from showing within the window.
Custom-Made Picture Framing, Custom Stretcher Bar Frames
, Custom Artist Canvas, Custom Canvas Stretching, Canvas transfer & Dry Mounting Services
A division of USA On Canvas -