BB1 1760 x 1350 x 710mm, 1100 litre capacity bund, one 1000 litre IBC BB1T overflow tray for use with BB1, 550 x 545 x 855mm, 86 litre capacity bund, overflows into BB1 sump BB1D 1950 x 1400 x 725mm, 1100 litre capacity bund, one 1000 litre IBC. Built in dispensing area BB1C self assembly frame and cover only for use with BB1 BB2 2560 x 1350 x 510mm, 1140 litre capacity bund, two 1000 litre IBC BB2T overflow tray for use with BB2, 530 x 510 x 560mm, 86 litre capacity bund, overflows into BB2 sump BB2C self assembly frame and cover only for use with BB2 and BP8