ATA rack mount flight road case for effects units, super nice case in excellent condition. The outer case measures 24 7/8 from cover end to cover end, 13 tall and 20 1/2 inches wide, the rail height is 10 7/8 inches tall. This could hold up to 12 separate thin effects units at one time. There are no markings on it and there are feet on one side which is odd that it would have the units on end. One of the feet is missing as seen in the photos.