Red River's 8.5x11 scored card stock is your best bet for custom note card printing. The finished card will fold to 5.5" x 8.5".
Why this size? The smallest sheet your printer can use is 8x10. Our line of smaller scored cards will not feed or print properly in a 4000 or 4800.
Creative Option - Another option is to print two cards on one 8.5x11 scored sheet and cut it in half. Your resulting card when cut and folded will be 4.25" x 5.5" in landscape format (see below) A basic Photoshop template for this layout is available on our website.
1) Print two cards on one 8.5x11 scored sheet then cut that sheet in half.
2) Fold your cut cards along score line for 5.5" x 4.25" cards in landscape format