DEF Tanks » are specialized containers designed for storing Diesel Exhaust Fluid, available in vertical sizes ranging from 50 to 16,500 gallons and horizontal leg tanks from 35 to 5,025 gallons. Options include double-wall and cone-bottom designs, with heat tracing and insulation to maintain optimal fluid temperature. Custom options, such as 300 or 500-gallon elevated storage tanks, can be molded in various colors and with logos. If existing designs don't meet specific needs, DEF Tanks can be custom-molded to fit any required size or configuration. Sievers Poly Tanks, LLC excels in creating both modified and fully customized DEF storage solutions.