packgent

Spec Builder

Describe the product and how it ships. Packgent works out the box: style, board, size, strength, carrier billing and pallet load. The link updates as you type, so you can share the spec.

Product
Size, in (L × W × H)
Shipping
Carriers
0 = fill to 60 in

FEFCO 0201 · RSC

12 × 10 × 8 in inside

A regular slotted container is the default: least waste, any box maker can run it.

45.25 blankL 12W 10H 85outerouterLinnerinnerWLWtab
Drawn by Packgent from the style's flap rule. Solid lines are cuts, dashed lines are scores.

Board

Recommended23 ECT B flute317 lbf (+428%)
Runner-up23 ECT C354 lbf
Over-spec26 ECT B358 lbf

Lowest ECT that meets the required strength, B and C single wall or BC and EB double wall. Ranked by ECT, not cost: Packgent has no verified board prices or weights.

Strength

Gross weight per box4 lb
Boxes in the stack6 (parcel assumes 6)
Load on bottom box20 lbf
30 days in storage−40%
Safety factor3 (parcel floor)
Required BCT60 lbf

BCT ≈ 5.87 × ECT × √(caliper × 44). Losses are Packgent's default assumptions; edit them in the stacking calculator. Estimate only: confirm with ASTM D642.

Dimensions

Inside12 × 10 × 8 in
Outside, estimate12.25 × 10.25 × 8.38 in
Blank45.75 × 18.25 in, 5.8 ft²
Library size within ½ in12 × 10 × 8

Outside is an estimate: your box maker sets the scores.

Dimensional weight

CarrierDWBillableSave a pound
USPSn/a4 lb—
FedEx7 lb7 lbL −2 in → 6 lb

Divisors checked on carrier pages 2026-10-27.

Pallet, 48 × 40

Per layer12
Layers to 60 in6
Boxes per pallet72
Load space filled72%

Freight rule

Item 222 limits are pending verification, so this spec is not checked against them.

Get quotes on this spec

About this style: 0201 Regular slotted container. About the board: B flute.

How the Spec Builder decides

  1. Inside dimensions are the product plus twice the cushion on each axis, turned so length is at least width.
  2. Style: a regular slotted container unless the product is fragile or over 40 lb gross (full overlap), shallow parcel-only with graphics (die-cut mailer), or over 20 ft³ palletized (bulk bin).
  3. Load on the bottom box is (boxes in the stack − 1) × gross weight; parcel assumes 6 high.
  4. Required strength is that load times a safety factor built from storage, humidity, pattern and overhang losses.
  5. The board is the lowest ECT, in B, C, BC or EB, whose McKee estimate meets the requirement.
  6. Outside dimensions, blank, dimensional weight and pallet pattern follow from the chosen board.

Last reviewed 2026-10-27. See the method page for every formula and assumption.