Amazon.com: Plustek A3 Large Format Flatbed Scanner OS 1180 : 11.7x17 scan Size for Blueprints and Document. Design for Library, School and Soho. A3 scan for 8 sec, Support Mac and PC :
Amazon.com: VIISAN 3240 A3 Large Format Flatbed Scanner, 2400 DPI, Scan 12"x 17" in 4 sec, Frameless, Auto-Scan, Document & Photo & Book Scanner, Design for Library, School and Soho. Supports Windows
Plustek A3 Flatbed Scanner - 11.7x17 Large Format scan Size for Blueprints and Document. Scan A3 for 9 seconds - Walmart.com
Mustek ScanExpress A3 Scanner 1200 Pro for Win/Mac (SEA3USB1200PRO) - Newegg.com