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FLEX

FLEX STACK PACK 3-Piece Storage System - FSM1101-3

  • Based on 43 reviews
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Availability: In Stock.
Fulfilled by Acme Tools
Arrives Friday, May 22
Order within 20 hours and 42 minutes
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Style: 3-Piece System


Features

  • QUICK-CONNECT - Fast and effortless interlocking connectivity allows you to quickly stack and unstack toolboxes
  • 250 LB. LOAD CAPACITY - Heavy load capacity for tools, materials, and accessories
  • IMPACT PROTECTION - Built with an impact-resistant polypropylene body and aluminum-reinforced corners to withstand the toughest jobsite conditions
  • IP65 PROTECTION - All-weather protection to shield your tools from the elements when you're on the job
  • 9" RUGGED WHEELS - Conquer any terrain with oversized rubber wheels
  • REMOVABLE TELESCOPING HANDLE - Extends for easy jobsite navigation and removes fully for storage in a covered truck bed when your work is done
  • EASY ACCESS - Gas struts aid opening and closing of the lid, and keep it propped open securely for easy tool access when needed
  • WHAT'S INCLUDED - (1) FLEX STACK PACK Rolling Tool Box, (1) FLEX STACK PACK Medium Tool Box, (1) FLEX STACK PACK Suitcase Tool Box, (2) Removable Accessory Trays, (4) Organizer Cases with dividers
  • FULL RANGE COMPATIBILITY - STACK PACK Toolboxes, organizers, accessory cases, and toolbox attachments are endlessly configurable across the full STACK PACK system
  • ONE-YEAR WARRANTY - Register your new products and get a limited one-year warranty on your FLEX STACK PACK tool boxes and organizers

Description

Pack everything you need for a day on the job with the FLEX STACK PACK™ 3-Pc. Storage System. Quick-connect interlocking attachment points offer fast and effortless connectivity to customize your layout with any piece in the STACK PACK™ storage system. IP65 all-weather protection shields your tools and accessories from the elements, and an impact-resistant polypropylene body with aluminum reinforced corners offers protection from the toughest jobsite conditions. Complete with the STACK PACK™ Rolling Tool Box, Medium Tool Box, and Suitcase Tool Box, you’ll have enough storage to bring the workshop with you to and from the jobsite. Protected by a one-year limited warranty when registered within 30 days of purchase at registermyFLEX.com.

Brand: FLEX


Material: Polypropylene


Color: Grey/Black


Product Dimensions: 22"L x 19.2"W x 35.1"H


Water Resistance Level: Water Resistant


Brand Name: FLEX


Model Number: FSM1101-3


UPC: 840163201315


Manufacturer Part Number: FSM1101-3


Item Type Name: PORTABLE_TOOL_BOX


Item Weight: 54.3 Pounds


Manufacturer: FLEX


Unit Count: 1.0 Count


Included Components: 3-Piece Tool Box System


Water Resistance Level: Water Resistant


Number of Compartments: 6


Capacity: 250 Pounds


Material Type: Polypropylene


Color: Grey/Black


Item Dimensions L x W x H: 22"L x 19.2"W x 35.1"H


Maximum Weight Recommendation: 250 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Tough, versatile, maneuverable.
This is the second time I bought them. I've had my first set for 3 years and zero complaints. They are tough and durable. Bought a second set for my son who's setting up his own truck. His will be stored outside the truck. So we'll get a very good weather test. I'll follow up later with how that goes. But I find these well worth the money. The wheels are my favorite part. They make dragging it anywhere easy. ... show more
Reviewed in the United States on February 14, 2026 by Amazon Customer
    • A definite buy for sure
This was definitely worth the money. Rolls very good even over 2x4's. Tons of room and unstacked pcs are very manageable for me with severe arthritis. Solid latches and handles. Only thing that I would like better is the trays. Wish the handles went from end to end instead of taking up a lot of valuable space in the middle for things like circular saw blades, but not a major issue considering how great this product is. Definitely recommend this to anyone that wants high quality and functionality. ... show more
Reviewed in the United States on October 29, 2025 by Slim
    • A+
Review Image by Matt Pennell
I was looking at some other top competitors tool boxes that were similar Flex offers a much better design for a lot cheaper price. I recommend this setup to everyone. I’m an irrigation contractor and I move the box around from my truck to my shop to out in the front yard of customers house. I do this with ease. It’s very versatile and built very well ... show more
Reviewed in the United States on October 12, 2025 by Matt Pennell
    • Great toolbox set up
My husband loves it
Reviewed in the United States on February 28, 2026 by Connie
    • Heavy duty!
Very heavy duty, easily moved. It can get heavy depending on what you put in it, but still moveable. The handles on each one help to move them individually! Definitely recommend!
Reviewed in the United States on December 6, 2025 by Lori
    • What can’t you fit in your? Lol
The space is amazing
Reviewed in the United States on February 22, 2026 by JOEL TOLEDO
    • Tool space organizer
Great for tools and organization in your van. Also easy to carry on the job site and very durable. Great price and secures real easy
Reviewed in the United States on September 5, 2025 by reco francis
    • The he best of the best
I use my Flex stack to move equipment for classes I teach. Everything in one convenient place. The quality of the Flex stack is superior to the other tool boxes on the market.
Reviewed in the United States on March 11, 2026 by mzmedic

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