Blank Checks Paper Stock-3 Checks On A Page-100/Box (Blue Marble) 100 pk of blank stock computer checks 3 on a page Has all advanced security features for checks,Designed to help prevent checks fraud Check paper good for Laser and Inkjet printers Sheet Size: 8 1/2"(w) x 11"(l) Check Size: 8 1/2"(w) x 3 1/2"(l).