What box for ANSI E (34 × 44 in) sheets? Inside sizes and dim weight

ANSI E (34 × 44 in) sheets measure 34 × 44 in. With 1 in of cushioning on every side, a 1 in stack needs a box at least 46 × 36 × 3 in inside; a shallow die-cut mailer or a telescope box suits flat goods better than a deep slotted carton.

Inside sizes by stack thickness and cushioning

Stack, inCushion per sideInside box, inSuggested styleSmallest library size that fitsUSPS DWFedEx DW
0.50.545 × 35 × 1.50427custom24 lb23 lb
0.5146 × 36 × 2.50427custom38 lb36 lb
0.5248 × 38 × 4.50427custom69 lb66 lb
10.545 × 35 × 20427custom36 lb23 lb
1146 × 36 × 30427custom51 lb36 lb
1248 × 38 × 50427custom83 lb66 lb
20.545 × 35 × 30427custom48 lb34 lb
2146 × 36 × 40427custom63 lb48 lb
2248 × 38 × 60427custom97 lb79 lb
40.545 × 35 × 50427custom72 lb57 lb
4146 × 36 × 60427custom88 lb72 lb
4248 × 38 × 80301custom124 lb105 lb

Inside = item + 2 × cushion on each axis. Dimensional weight uses C flute outside dimensions (ID + 2 calipers on L and W, + 3 on depth); n/a means USPS bills actual weight below 1,728 in³. Divisors checked 2026-10-27. The suggested style is a rule of thumb: 0427 for depths to 6 in, 0301 beyond.

Packing notes

  • Keep flat goods flat: a box whose depth is far more than the stack invites shifting, so fill or reduce the depth.
  • Corners take the knocks; corner protectors or a rigid pad on each face protect edges better than loose fill.
  • Large sheets (44 in long side) are often rolled into tubes instead; a flat box this size bills heavily by dimensional weight.

Open this item in the Spec Builder to set your own thickness, weight and carriers.

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Sources