Made of quality polystyrene by Chrysnbon, these frames can be used as is or painted to match your decor. . Inside dimension Size: Large Frame 1 1/4H x 2"W. White Oval 1"H x 3/4"W. White Rectangular 1"W x 3/4"H. Small Oval & Rectangular: 5/8"W x 3/4"H."