UP-9018 Ulrich A or A4 size document folder, for 11 x 17 inch max sheet size, Plan File Cabinet Folder for organizing Maps and Plans. Replacement for 3624 Planfile Cabinet. Ulrich File Folders are perfect to organize your Maps, Plans or any Large Document and are made for the Ulrich file cabinet. They provide maximum organization and keep your Maps, Plans or Large Documents filed flat, without curling or tearing. Great replacement for a flat file cabinet.