About this product Durable Material - Made of sturdy and durable metal, providing highly secure protection and secure storage for your mail. The surface is fully sprayed or baked with paint, which is aesthetically pleasing and corrosion-resistant. Convenient viewing window - allowing you to easily view emails, notes, votes, or money. Security lock - equipped with an independent key lock and two keys, both sturdy and luxurious. Easy to install wall mounted email kit 24/7 Service - We will continue to uphold the corporate spirit of positivity, enthusiasm, sincerity, and pragmatism, and provide you with 24/7 service.