What is the purpose of a tub spout spacer and how does it contribute to the installation of a tub spout?

A tub spout spacer is used to ensure the proper alignment and positioning of a tub spout during installation. It helps to create a secure and stable connection between the spout and the wall, preventing leaks and ensuring a professional finish. The spacer also helps to maintain the correct distance between the spout and the wall, allowing for proper water flow and functionality.