Scaffold walk boards, stage boards, and planks are all types of platforms used in scaffolding. They are designed to provide a safe and stable work surface for workers and materials.

Scaffold walk boards are flat, horizontal boards that are placed across the top of scaffold frames. They are typically made of wood, aluminum, or steel and come in various lengths and widths to fit different scaffold configurations. Walk boards have hooks or other mechanisms that allow them to be securely attached to the scaffold frames.

Stage boards are similar to walk boards, but they are typically wider and designed to span longer distances. They may also have additional features such as non-slip surfaces or guardrails to provide extra safety for workers.

Planks are narrow boards that are used to create a platform between two scaffold frames. They are typically made of wood and can be used to create a platform at any height within the scaffold system. Planks are usually supported by brackets or hooks that are attached to the scaffold frames.