Festool 204840 Systainer3 M 112

Festool SYS3 M 112 Systainer is a compact modular storage case for organizing, protecting, and transporting tools, accessories, and consumables. This is a storage and transport case designed for jobsite mobility and shop organization. Model Number: 204840. It is a good fit for tradespeople and serious DIY users who want small parts and core gear packed in a case that stacks cleanly with the rest of the Festool system.

The biggest reason this case matters is simple: it keeps your setup organized without slowing you down. Festool built the SYS3 M 112 around the T-LOC latch system, so you can open, close, and connect the case in a single movement. On the job, that means less fumbling with stacked boxes and less time digging for the one accessory you know you packed somewhere.

Size is what makes this particular Systainer useful. At 15.59 in. long, 11.65 in. wide, and 4.41 in. high, it stays low-profile enough to fit into tight storage layouts, but it still gives you 7.7 L of internal volume. The inside dimensions of 15.31 in. x 10.83 in. x 2.80 in. make it especially handy for layout tools, sanding supplies, hardware assortments, router bits, fasteners, and other items that get lost fast when they are not assigned a proper home.

Festool also designed this Systainer for real transport, not just shelf storage. It weighs only 3.08 lbs empty, carries up to 44.09 lbs on its own, up to 88.18 lbs when connected, and the lid is rated for 220.46 lbs. That matters if you are stacking cases in a van, moving them around a site, or using them as part of a packed-out mobile workflow where everything has to stay together and hold up.

This version comes without a tool insert, which is actually the right move for a lot of users. Instead of being locked into one machine layout, you get an open interior you can set up around the gear you actually carry. If you want a flexible storage case for mixed accessories or changing job requirements, that open format is more useful than a molded insert you may outgrow.

Compatibility is another strong point. The Festool SYS3 M 112 Systainer connects with other Systainer generations, transport systems, and Festool mobile dust extractors. Festool also notes that the height matches the KAPEX saw table height on select stand setups, which makes it practical as a support surface for longer workpieces in the right cutting setup.

Who should buy it? Anyone already invested in Festool storage will get the most from it, but it is also a smart pickup for contractors who need a durable modular toolbox for jobsite organization. Electricians, installers, finish carpenters, remodelers, and shop users who carry small but important gear will appreciate how much cleaner their setup gets when everything has a dedicated place and stacks with the rest of the system.

Festool SYS3 M 112 Systainer is the right size for the stuff that usually gets lost

This is the kind of Systainer that earns its keep fast because it cleans up the small-tool and accessory mess that slows down real work.

• Who it’s for: Pros and serious DIY users who already run Festool storage or want a compact modular case for accessories, layout tools, and job-specific supplies.
• Why it stands out: The low profile is useful, the T-LOC system is quick, and full compatibility with older Systainers and Festool transport gear makes it easy to fold into an existing setup.
• Worth knowing: This one ships without a tool insert, so it is best for flexible storage rather than a dedicated molded-tool layout.

• Does this Festool SYS3 M 112 Systainer include a tool insert? No. It comes without a tool insert.
• Can it connect to other Festool Systainers? Yes. It is compatible with Systainer3 products and previous Systainer generations.
• Will it work with Festool mobile dust extractors? Yes. Festool lists compatibility with mobile dust extractors and transport systems.
• How much weight can it carry? The case has a 44.09 lb load capacity on its own and an 88.18 lb connected load capacity.