Festool 576786 SYS-STF-D225 Planex Abrasives M 337 Systainer3 is a dedicated abrasive storage Systainer for keeping 225 mm sanding discs organized, protected, and easy to grab on the job. This is a Systainer designed for storing and transporting PLANEX drywall sanding abrasives. Model Number: 576786. If you already run a PLANEX LHS 2 225 EQ(I), this case gives those larger discs a proper home instead of leaving them bent, mixed, or buried in a van box.

The big value here is simple: organization that actually saves time. Festool built this case with five separate compartments, so you can split grits clearly and keep them ready for the next pass. On a wall sanding job, where you may move through several abrasive grits in sequence, that means less hunting around and fewer interruptions. The insert is specifically made for 9 inch, 225 mm abrasives, so the fit matches the disc size the PLANEX user is actually carrying.

The T-LOC system is one of the features that makes this more than just a plastic box. With one central latch, you can close it, open it, and connect it to other Systainers. More importantly for day-to-day use, Festool notes that you can open the Systainer without disconnecting it from other stacked Systainers first. That is the kind of detail that matters when your setup is packed tight in a shop, trailer, or work van and you do not want to keep unstacking gear just to grab one grit.

Protection is another practical reason this case exists. Abrasives do not help much if the edges are curled, the faces are contaminated, or the discs are taking on moisture and dust in transit. Festool positions this Systainer as sealed protection from dust, water, and temperature changes, while also protecting the discs from general jobsite damage. For large drywall sanding discs, that protection helps preserve flatness and keeps your abrasives ready to work when you need them.

From a system standpoint, this storage case fits the wider Festool workflow. It is compatible and connectable with all generations of Systainers, and Festool also notes direct integration with Bott Vario3 vehicle racks. That makes it a strong fit for contractors who already work out of a Systainer-based setup and want their abrasive storage to travel and stack the same way as the rest of their tools and accessories.

Physically, this is a SYS3 M 337 size Systainer with overall dimensions of 15.59 inches long by 11.65 inches wide by 13.27 inches high, and it weighs about 6.2 pounds. That size gives it enough vertical room to organize large diameter sanding discs while still staying compact enough for transport and shelf storage. It is not trying to be a general catch-all tote. It is purpose-built storage for a specific abrasive format, which is exactly why it works well.

Who should buy it? Drywall finishers, remodeling contractors, painters doing prep work, and anyone already using the Festool PLANEX LHS 2 225 EQ(I). If your abrasive discs are currently riding loose in packaging, mixed across boxes, or getting beat up in the truck, this accessory fixes that problem in a clean, system-friendly way. If you do not use 225 mm PLANEX abrasives, it is probably too specialized. If you do, it is a smart piece of shop and jobsite organization.

Festool 576786 SYS-STF-D225 Planex Abrasives M 337 Systainer3 is the right buy if loose discs are slowing you down

This is a purpose-built storage case that makes a lot of sense for anyone serious about keeping PLANEX abrasives clean, flat, and easy to reach.

• Who it's for: PLANEX users, drywall finishers, remodelers, and painters who work through multiple abrasive grits and want cleaner organization on the truck and in the shop.
• Why it stands out: The five-compartment layout, 225 mm insert, and T-LOC Systainer integration make it more useful than a generic storage tote.
• Worth knowing: This is a specialized abrasive storage Systainer, not a general toolbox. If you do not use 9 inch PLANEX discs, it is more case than you need.

• What tool is this Systainer made for? It is suitable for the Festool PLANEX LHS 2 225 EQ(I).
• How many compartments are inside? It has five separate compartments for organizing abrasives.
• What abrasive size does it support? The insert is designed for 9 inch, 225 mm abrasives.
• Can it connect with other Systainers? Yes. The T-LOC system allows it to close, open, and connect with other Festool Systainers.