Custom Matting Mat Board Size Opening for Custom Picture Frame | White — Modern Memory Design Picture frames
Elegant Black or White with gold matting and Gold Picture Frame for 4x6 Photo with Double Matting - Three interchangeable mats for custom layout. Overall size is 11.5 x 9
Custom Mats for Frames Using The Cricut Maker - Angie Holden The Country Chic Cottage
How to make your own photo mats — Interiors By Sarah Langtry