Still a simple carton, this crash lock base carton is used not for packaging but for a money box. This shows the flexibility of this simple packaging design. Litho printed and supplied to you glued and packed flat for easy assembly. This picture shows the base of the carton. Crash lock base cartons are one of three main types of cost effective packaging , the others are tuck in end cartons and envelope base cartons. The crash lock base carton is the most suitable for heavier products.