For more than 37 years Browning Prosteel safes have been known for their strongest bodies and thickest doors. They offer a convenient design with efficient storage solutions. Perfect fire protection is another benefit of Prosteel safes. The rating varies up to 180 minutes depending on the model. The vaults are different in size, color and features. However, they are all built to provide the highest level of security by combining proven traditional approaches with security innovations.