This is a wooden cut sheet film holder with two removeable metal-gripped dark slides. The holder has compartments on either side that hold one sheet of film each. The compartments are separated by a flat-black metal divider with slots along the two long edges. There are flaps on either side that are secured to the base with a cloth adhesive material.
Imprinted in the center of the metal frame on each side: "4X5 FILMHOLDER | ANSCO | BIRMINGHAM N.Y. | MADE IN U.S.A."