Single regular insert: Fits a 1 cupcake box (Darlington) 3.5" x 3.5" x 0.75"
2 regular insert: Fits a 2 cupcake box (Keenan) 6.75" x 3.5" x 0.75"
6 regular insert: Fits a 6 cupcake box (Barent) 9.5" x 7" x 0.75"
12 regular insert: Fits a 12 cupcake box (Penley) 14" x 9.5" x 0.75"
24 mini insert: Fits a 12 cupcake box (Penley) 14" x 9.5" x 0.75"