The Constructor CON-GUA-DBT-S is a single cylinder deadlock, suitable for both remodeling and new construction projects. It features an adjustable backset, allowing it to replace existing locks of different sizes. The 2-3/8" or 2-3/4" backset can be easily changed, making it a versatile choice for various door types. The lock includes a template for precise marking and drilling of holes, ensuring proper installation. Additionally, the package clearly states the backset length, eliminating the need for measuring and guesswork.