SQUARE TO ROUND TRANSITION 1.5 12×12/10 SQUARE TO ROUND TRANSITION 1.5 12x12/10 SQUARE TO ROUND TRANSITION 1.5” Deep Category: Sheet Metal Fittings Sub-Category: Transitions Next Product SQUARE TO ROUND TRANSITION 1.5 12x12/12 Previous Product SQUARE TO ROUND TRANSITION 1.5 09x09/09