Four hole collage mats are mats that have four holes cut in them. They typically have holes that will accommodate standard size photos such as 4 x 6 - 5 x 7 - 8 x 10 among others. Multi hole mats are great to show off your treasured family keepsakes.
4 hole collage mat with 3 windows at 2 3/4 x 3 3/4 that will fit pictures that are 3 x 4 and one window 4 3/4 x 6 3/4 that will fit a picture that is 5 x 7.
4 Hole collage mats or collage frames your choice. Some of the best looking collage hole mats are those that have an even number of holes. As always pick from over 500 different frames to put around your favorite collage mat.