What box for A1 documents and prints? Inside sizes and dim weight

A1 documents and prints measure 23.39 × 33.11 in (594 × 841 mm). With 1 in of cushioning on every side, a 1 in stack needs a box at least 35.11 × 25.39 × 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
0.50.534.11 × 24.39 × 1.50427custom13 lb13 lb
0.5135.11 × 25.39 × 2.50427custom21 lb20 lb
0.5237.11 × 27.39 × 4.50427custom39 lb38 lb
10.534.11 × 24.39 × 20427custom19 lb13 lb
1135.11 × 25.39 × 30427custom27 lb20 lb
1237.11 × 27.39 × 50427custom46 lb38 lb
20.534.11 × 24.39 × 30427custom26 lb19 lb
2135.11 × 25.39 × 40427custom34 lb27 lb
2237.11 × 27.39 × 60427custom54 lb45 lb
40.534.11 × 24.39 × 50427custom38 lb31 lb
4135.11 × 25.39 × 60427custom48 lb40 lb
4237.11 × 27.39 × 80301custom69 lb60 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 (33.11 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.

Other formats

Sources