Small (30L/8Gal gross tank volume)
Medium (60L/16Gal gross tank volume)
Large (90L/24Gal gross tank volume)
1.5BBL (240L/63Gal gross tank volume)
3BBL (420L/110Gal gross tank volume)
5BBL (720L/190Gal gross tank volume)
7BBL (1080L/286Gal gross tank volume)