What is the maximum area for a window glazing panel in a 1-hour fire-rated door installation on an interior wall?

In a 1-hour fire-rated door installation, building codes often set specific limitations on the size of window glazing panels. The maximum area of glazing permitted in such installations is typically determined by fire safety standards that aim to limit the spread of fire through these openings.

For a 1-hour fire-rated door, the maximum area for a window glazing panel is established at 100 square feet. This size ensures that while natural light can enter the space and visibility is maintained, the fire resistance of the door is not compromised. The size limit is crucial for maintaining the integrity of the fire-rated assembly and for ensuring the safety of the building occupants.

The other area options surpass the established safety limits, which could lead to issues regarding fire resistance and compliance with the building codes. Therefore, the correct answer highlights the standards set forth for safe construction practices in fire-rated installations.