EasyPro 4" Heavy Duty Bottom Drain w/ Air Diffuser (MPN EBD4A)

The code provided pertains to the formatting and design of a webpage. It includes CSS style rules that adjust the layout and appearance of certain elements when the browser window is smaller than 500 pixels wide. The specific changes made include adjusting the positioning, width, and alignment of the "gold" div and the "content" div, as well as adding a clear:both property to create space between them. Additionally, there is an HTML image tag that displays a "made in USA" logo. The text following the code consists of a list of features for the EBD4 and EBD4A products. These features include a redesigned bottom drain with or without an air diffuser, a welded threaded inlet, a threaded center stand pipe, secure attachment of the liner ring to the base, a strong roto-molded design, and compatibility with 4 schedule 40 PVC fittings and pipes. The EBD4A variation includes an air diffuser integrated into the dome lid, which allows for installation of air tubing under the liner. The EBD4A also has a specific tubing adapter and recommended airflow range.