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The Flex Stack Pack FS1102 is a medium stackable tool box with a 140 lb capacity and 3,946.8 cu. in. of space. Its impact-resistant polypropylene body has aluminum-reinforced corners, IP65 all-weather sealing and two-piece locks. Nine-inch wheels and aluminum handles let it roll from a truck bed to a job site. At $112.34 at Significant Services as of November 8, 2026, it sits at the low end of its recent range across the 4 stores that list it new.
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Lowest price we've seen: $74.00 on Nov 8 at Acme Tools. Tracked across 12 stores since Nov 8.
Rated 4.9 out of 5 from 96 ratings, owners mostly praise the build and the weather sealing. Complaints are few and center on size and weight when full.





