Size
B-1P (72*26*57cm/28.34*10.23*22.44inch)
B1-1.5P (80*26*57cm/31.49*10.23*22.44inch)
B2-large 1.5P (80*32*57cm/31.49*12.59*22.44inch)
B3-2P (85*26*57cm/33.46*10.23*22.44inch)
B4-large 2P (85*32*57cm/33.46*12.59*22.44inch)
B5-3P (92*35*69cm/36.22*13.77*27.16inch)
B6-large 3P (98*40*75cm/38.58*15.74*29.52inch)