# Flex STACK PACK 16 in. Jobsite Backpack

> Flex STACK PACK 16 in. Jobsite Backpack (FS1204) is a large bag from Flex STACK PACK. It measures 15.75 × 11.81 × 19.67 in (L × W × H) and is rated to carry 40 lb. Lowest in-stock price on file: $149.00 at Ohio Power Tool (checked Sep 30, 2026).

- Line: [Flex STACK PACK](https://modulartoolbox.com/lines/flex-stack-pack/)
- Category: [Bags & Pouches](https://modulartoolbox.com/compare/bag-pouch/)
- Size tier within its line: large
- Status: current
- Data confidence: confirmed (last verified 2026-10-02; [what this means](https://modulartoolbox.com/how-we-compare/#confidence))
- Page: https://modulartoolbox.com/products/flex-stack-pack-16-inch-jobsite-backpack/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model / part number | FS1204 | [flexpowertools.com](https://www.flexpowertools.com/stack-pack-16-inch-jobsite-backpack-fs1204/) (brand, page, 2026-10-02) |
| Dimensions (L × W × H, in) | 15.75 × 11.81 × 19.67 | [flexpowertools.com](https://www.flexpowertools.com/stack-pack-16-inch-jobsite-backpack-fs1204/) (brand, page, 2026-10-02) |
| Weight (lb) | not published |  |
| Load capacity (lb) | 40 | [flexpowertools.com](https://www.flexpowertools.com/stack-pack-16-inch-jobsite-backpack-fs1204/) (brand, page, 2026-10-02) |
| Material | fabric | [ohiopowertool.com](https://www.ohiopowertool.com/flex-fs1204) (retailer, page, 2026-10-02) |
| Weather rating | not published |  |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Ohio Power Tool | $149.00 | in stock | 2026-09-30 | [View at Ohio Power Tool](https://www.ohiopowertool.com/flex-fs1204) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The equivalent in other lines

Same category, same size tier (large), different line:

- [DeWalt ToughSystem 2.0 Jobsite Tool Bag](https://modulartoolbox.com/products/dewalt-toughsystem-2-0-jobsite-tool-bag/) — $113.99
- [Milwaukee PACKOUT Backpack](https://modulartoolbox.com/products/milwaukee-packout-backpack/) — $139.97
- [Milwaukee PACKOUT Structured Backpack](https://modulartoolbox.com/products/milwaukee-packout-structured-backpack/) — $329.97


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Modular Toolbox lists modular tool storage from every brand side by side, with a source for every spec. [How we compare](https://modulartoolbox.com/how-we-compare/). Data as of 2026-10-03.