What type of window glass can be used within 24" of the door?

Plate glass is the appropriate type of window glass that can be used within 24 inches of a door. This is primarily due to its strength and clarity, which are important in areas where safety and visibility are essential. Plate glass is manufactured by polishing and flattening molten glass, resulting in a smooth and uniform surface.

In proximity to a door, where there may be a higher risk of breakage due to impact or abrasion, having a more durable glass is crucial. Plate glass meets these requirements effectively, allowing for both the aesthetic appeal of clear visibility and the practicality of safety.

Conversely, annealed glass, which is simply heat-treated, lacks the same safety attributes and is more prone to shattering upon impact. Etched glass, while appealing for privacy, is not specifically designed for structural integrity in high-traffic areas. Enameled glass, which has an applied color, also does not provide the strength necessary for use near doors.

Therefore, plate glass is the optimal choice, balancing safety, durability, and visibility in locations close to doors.