Shipping Boxes Manager

Shipping Boxes Manager

(1 review)
Free! (Lifetime license)

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Required Install

Optional Install
Attribute Dimensions Add dimensions to your attributes for more accurate shipping rates when using product dimensions.

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This module allows Zen Cart store admins to define the dimensions and weight of each shipping box. These values are then used by supported shipping modules for calculating the most accurate shipping rates by using a boxing algorithm to pack products into the available shipping boxes.

This module is currently compatible with:

The algorithm works first by determining the smallest box that can fit all of the products.  If a box is found, the dimensions and weight of the box plus the weights of all of the products are used for rating. If a box is not found, the largest box is used then products that can fit inside of the box are subtracted from its total volume until there is no more room to add products.  Then this process is repeated with the remaining products.

As it is difficult to replicate the real world with an algorithm, one must consider that the algorithm will not always be accurate.  For example, in the above example while the volume of the box becomes smaller as products are added, the dimensions are not.  Therefore even though there may be available volume for multiple products, in reality they may not actually fit.

The algorithm also has an advanced feature called product nesting.  This is when one product can fit inside another to save space inside of the package.  A company selling cups could stack the cups one on top of the other with a percentage of each additional cup nesting inside the prior cup.  Therefore the package weight would increase by the number of cups, but the volume would decrease at a slower rate allowing more cups to be packaged than if they weren't nested.

Administrators can also designate a product as "ready to ship." This means the product ships in its own box and the dimensions and weight of the product are used as the package weight and dimensions. Therefore these products would skip the abox algorithm.

Any product that doesn't have dimensions applied will be rated using the Zen Cart default algorithm which simply adds up the weights and divides by the maximum weight setting in your Shipping/Packaging configuration.


  • Zen Cart Version 1.3.8a, 1.3.9h, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5a, 1.5.5b, 1.5.5c, 1.5.5d, 1.5.5e, 1.5.5f, 1.5.6, 1.5.6a, 1.5.6b, 1.5.6c, 1.5.7, 1.5.7a, 1.5.7b, 1.5.7c

Version History

3.0.5 Aug 10, 2021
3.0.4 Mar 2, 2021
3.0.3 Jun 26, 2020
3.0.2 Oct 6, 2016


5.0 / 5 (1 review)
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  • RJ Spomer Jan 2, 2017

    Shipping Boxes Manager

    Shipping box manager did not work out of the box so I paid to have Numinix install it. They had some issue getting it to work but after a couple of weeks they got it to work. The addon works great for my products since I was getting killed on dimensional weight charges. If you are going to pay someone to install pay Numinix.

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Our stated prices for all modules we install are based on installation into the default platform configuration. We always ensure your logo and basic color palette are in place when we install a plugin. However, any additional "custom" styling, design work, or derivitive tasks generated due to a site's non-default configuration could require additional prepaid programming hours.

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