## Most Economic Size Ratios |
Boxcomp Help Index Main Index |

The formulas below were calculated using partial differentiation. Naturally, it is impossible to include bend allowances or manufacturing joints in such formulas, as they bear no direct relationship to board area in terms of length, width and depth.

L = length of pack.

W = width of pack.

D = depth of pack.

V = volume of pack.

C = the proportion of the width which is to be covered by the outer
flaps, expressed as a fraction of the width.

FEFCO Style | Most Economic Proportions | Formula for Calculating Depth Size |

0201 | L = D = 2W | D = ^{3}$\sqrt{\mathrm{2\; *\; V}}$ |

0204 | 2L = D = 2W | D = ^{3}$\sqrt{\mathrm{4\; *\; V}}$ |

0206 | 2L = D = 4W | D = ^{3}$\sqrt{\mathrm{8\; *\; V}}$ |

0209 | L = D/C = 2W | W = ^{3}$\sqrt{\mathrm{(4\; *\; C)\; *\; V}}$ |

0300 | L = 4D = W | D = ^{3}$\sqrt{\mathrm{16\; *\; V}}$ |

More information can be found in the Packaging Knowledgebase