The Arch D paper size measures 24 inches wide by 36 inches tall, giving it a very large surface area of 864 square inches. Arch D is the fourth size up in the ANSI architectural series. Its 3:2 aspect ratio makes it identical in shape to Arch B scaled up by a factor of two. The elongated 24x36 size provides ample room for expansive architectural drawings requiring both width and height. Typical uses for Arch D include detailed master building plans, multi-level floor plans shown in section, and exterior elevations with extra vertical space for height. The generous area can accommodate many scaled architectural drawings on a single sheet. Arch D is a popular large format for final blueprint drawings needing to maximize detail and legibility. It can also print four Arch B sheets or two Arch C sheets at full size. Arch D hits a versatile balance of size and practicality for large architectural applications.