The Cartridge paper size measures 21 inches (533 mm) wide by 26 inches (660 mm) high, giving it a fairly large total surface area of 546 square inches. Also referred to as Dble Crwn or Double Crown, Cartridge offers generously sized sheets well-suited for bigger presentations, spreads, charts, posters and artwork needing ample area. Its landscape orientation provides width for wide format use cases like large tables and data rich business graphics, while still being compact enough for easy handing unlike more massive sheets. Cartridge has been a popular Imperial size for commercial artwork needs, big financial reports, marketing displays, classroom visuals, architectural drafting and other professional purposes benefiting from its balance of sizable area without the bulk of giant sheets. Unlike some niche Imperial sizes, Cartridge's flexible 21 by 26 inch proportions made it widely useful for anything requiring the space beyond standard letter or legal sizes. So from conference posters to financial plots to architectural renderings, Cartridge's dimensions lend themselves well to large yet manageable paper applications.