The suggestion box is made of acrylic, aluminum alloy material, complex process, and with fine workmanship. The box is well-designed, and practical, is simple to use, easy to install. It can be used as a mailbox, complain letter box, suggestion box.Features-Color:Assorted Color-Material:Acrylic, aluminum alloy-Size:28.50X21.50X10.50cm11.20X8.45X4.13in- Suitable for use in classrooms or public places, convenient to use, used for fundraising , etc.- Designed with the lock, easy and practical to use, this suggestion box is sturdy and lightweight.- Acrylic, aluminum alloy material, high strength and wear resistance, strong impact resistance, smooth surface.- Multi-functional, it can be used as a mailbox, complain letter box, suggestion letter box, voting box.- Wall hanging design, suitable for indoor and outdoor; It comes with a security lock, which can make your belongings more secure.Package list: 2 x letter boxes