SECURALL All-welded Aluminum Gas Cylinder Cabinet is designed for outdoor use, making it ideal for all weather environments. Will not corrode or discolor with age. See-through expanded metal sides and doors stop the accumulation of hazardous gases and permit quick, visual checks of cylinders. Most locks fit the built-in padlock hasp. Meets OSHA requirements and NFPA standards. Shipping costs are greatly reduced because aluminum is 1/3 the weight of steel. Ships fully assembled, ready for use immediately.