The artwork needs to be within: 15-1/8” (15.125”) wide x 6-5/8” (6.625”) high.
The artwork background (overall document size) needs to be: 15-5/8” (15.625”) wide x 7-1/4” (7.125”) high. This is for the bleed
The artwork for the spine needs to be within a 1-1/4” wide x 6-1/2” high with a 1/4” roll on each side.