Fan Guard, Material Galvanized Steel, 20 Gauge, Height 16 1/8 in, Width 16 1/8 in, Depth 15 in, For Use With 12 in Dayton Wall Fans, Dimension A 16 1/8 in, Dimension B 15 in, Dimension C 1 1/4 in, Dimension D 12 in, Standards OSHA