The Arch E3 paper size measures 27 inches wide by 39 inches tall, giving it a large surface area of 1,053 square inches. Like Arch E2, Arch E3 is an extra architectural size defined by ANSI/ASME with unique proportions. Its aspect ratio of 13:9 makes it slightly more elongated than Arch E2. The expanded 27-inch width provides additional space for broad architectural drawings and landscape layouts requiring left-to-right area. The 39-inch height accommodates more vertical space for interior elevations and perspective views. Typical applications taking advantage of Arch E3's dimensions include exterior elevations, multi-building site plans, and floor plans needing more width than Arch C. Although not a primary architectural size, Arch E3 fills a niche for specific needs benefitting from its slightly larger surface and greater width than Arch D. It can print two Arch C sheets side-by-side.