EATON B-Line Series Channel Bracket, Series: B291, 1070 lb, 6 Holes, 18-1/2 in Length, 1-5/8 in Width, 6 in D, 7/32 in Thickness, 9/16 in Dia, 5-1/4, 3-1/8, 7-3/4, 2-1/2 in Hole Spacing, Surface Mount, For Use With: Channel, Steel, Electro-Plated Zinc