What is required for wall-hung water closets that affects plumbing chase size?

For wall-hung water closets, a carrier is essential because it serves as the structural support that holds the toilet in place, allowing it to be mounted on the wall. The carrier not only supports the weight of the toilet but also contains the necessary plumbing connections for water supply and wastewater drainage. This means that the carrier must be adequately sized and configured to fit within the plumbing chase, impacting the overall dimensions of that space.

As the chase must accommodate the carrier, its dimensions could be affected by the choice and design of the carrier itself. A well-designed carrier system can help optimize the chase size by allowing for more efficient plumbing configurations, but it still requires a minimum width and height to ensure proper installation and function. Thus, the carrier plays a critical role in determining the appropriate size for the plumbing chase to accommodate all components of a wall-hung water closet.