Exclusively distributed by Fluidall, Gemrik’s re-designed and fully equipped bulk DEF Storage & Dispense Shelters will store, dispense, and protect the purity of diesel exhaust fluid within a secure climate-controlled island friendly footprint. Gemrik DEF Shelter Capacities 330 Gallon DEF Storage Capacity 660 Gallon DEF Storage Capacity 990 Gallon DEF Storage Capacity Gemrik entered the Diesel Exhaust Fluid (DEF) industry in 2010 and continues to provide protecive DEF Storage and Dispense Shelters for Fleets, both large & small, as well as the mining, marine and aggregate industries.