**OVERSTOCK 25% OFF** This Magazine BoxScored Panel Box Spacer is made from 200-lb-test white-two-sides B-flute corrugated cardboard. Our new design safely keeps equal pressure across the entire magazine. Fold on scores as box fills up. Sheet: 23-7/8 x 11-3/8" Front Panel: 8-7/8 x 11-3/8" Scores: 1-1/2, 3, 4-1/2, 6, 7-1/4"