There are roll film holders out there that will fit the 3 1/4 X 4 1/4 Graflex back properly. I got two 6X9 Suydam holders that seem to work well. They are very primitive in design but work just fine. Just a warning - buying accessories for the Graflex back can be a gamble. Many sellers don't know the difference between the Graflex and much more common Graphic camera backs