• The industry standard for flammable liquid storage safety.• "Z"-Bar reinforced construction adds rigidity and stability.• 5-point shelf support at 1-5/8" intervals.• Spark-proof metal lock and closure contact points.• Liquid-tight 2" bottom well prevents leakage from accidental spills.• Heavy 18-gauge (1.0mm) steel.• Double-wall construction with 1/2" air space provides strength, rigidity and fire resistance.• Dual vents with integral metal flash arresters prevent ignition when mechanically vented.• Additional Shelves available on all units.