Ibanez AC240 OPN Acoustic GuitarNotes 2018 2019 The AC240 features a grand concert body shape with a solid mahogany top on mahogany back and sides with an open pore finish. The soundhole is round with an abalone rosette. It has a mahogany neck with a 20 fret rosewood fingerboard with small white dot position markers. Components include a compensated bone saddle in a rosewood bridge with black Ibanez Advantage bridge pins, a bone nut, a red tortoise pickguard and chrome Grover die