What are fitted in place between the top of each header and the sill above?

Fascias are specifically designed components that serve the aesthetic and practical purpose of covering the gap between the header and sill in elevator installations. By fitting fascias in place, they not only enhance the visual appeal of the elevator entrance but also provide a clean, finished look which can help mitigate dust accumulation and protect internal components from exposure.

Fascias can also play a role in the overall structural integrity by ensuring that there is minimal movement between these two components, ensuring proper alignment and function of the elevator doors. This alignment is crucial for the smooth operation of the elevator and its safety.

Brackets and supports may refer to other structural elements used in different contexts and are not the specific components employed in this scenario. Beams typically relate to larger structural supports and would not be utilized in the way that fascias are regarding the elevator's visual and functional aspects at the entrance.