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 :
Fujitsu Fi-5530C2 Fast A3 Duplex Departmental Document Scanner - USB - PA03334-B601
Epson DS-32000 - Document scanner - Dual CIS - Duplex - A3 - 600 dpi x 600 dpi - up to 90 ppm (mono) / up to 90 ppm (color) - ADF (120 sheets) - up to 40000 scans per day - USB 3.0 - Walmart.com
Amazon.com: A3 Large Format Scanner,Color Receipt & Document & Photo & Book & Art & CAD Scanner,[A3 and Below] Flatbed Scanner with 1200 x 1200 DPI [A3 Scan for 8 Sec],Supports Windows