DeWalt 20V MAX is one of the most popular cordless platforms in North America. It covers drills, saws, sanders, routers, and multi-tools. Most of these tools have a dust port. Getting that dust into a shop vac or dust extractor is the goal.
The good news: most 20V MAX hand tools use the same 1-1/4 inch (32mm) port. The bad news: DeWalt miter saws use a much bigger port. Let us go through it all.
Standard 20V MAX Tool Ports
| Tool | Model Series | Port ID |
|---|---|---|
| Circular Saw | DCS570, DCS575 | 32mm (1-1/4") |
| Jig Saw | DCS331, DCS334 | 32mm (1-1/4") |
| Random Orbit Sander | DCW210 | 32mm (1-1/4") |
| Sheet Sander | DCW200 | 32mm (1-1/4") |
| Oscillating Multi-Tool | DCS356, DCS355 | 32mm (1-1/4") |
| Router (compact) | DCW600 | 32mm (1-1/4") |
| Detail Sander | DCW200 | 32mm (1-1/4") |
DeWalt Miter Saw Ports
DeWalt 10-inch and 12-inch sliding miter saws use a larger dust port on the dust bag chute. Most 10-inch models use a 38mm (1-1/2 inch) port. Most 12-inch models use a 46mm to 50mm port.
This is why a standard shop vac hose does not connect to a miter saw without an adapter. You need a step-down adapter from the saw port size to your hose size.
Connecting DeWalt Tools to a Festool CT
Many DeWalt users upgrade to a Festool CT MIDI for better filtration. The Festool hose is 27mm. Your DeWalt tool port is 32mm. The adapter steps the tool port down to fit the Festool hose end.
Use a 32mm-to-27mm reducer adapter. This fits over the tool port (32mm ID) and reduces to the Festool hose size (27mm OD).
Connecting DeWalt Tools to a Shop Vac
Standard small-barrel shop vacs use 1-1/4 inch hose. This fits directly on most DeWalt hand tools. No adapter needed in most cases.
If you have a larger shop vac with 1-7/8 inch hose, you need a 32mm-to-48mm step-up adapter. This is less common but available.
DeWalt FLEXVOLT Miter Saw
The FLEXVOLT 60V MAX miter saws (DHS790, DHS716) are DeWalt's largest cordless saws. These have a large 63mm (2-1/2 inch) port built into the blade guard housing. You can connect these directly to a 2-1/2 inch shop vac hose or to a 4-inch main dust collection duct with a 63mm-to-100mm adapter.
FLEXVOLT Circular Saw
The DeWalt FLEXVOLT 60V circular saw (DCS578) is a larger version of the standard circular saw. Its dust port is also 32mm, same as the 20V MAX models. No special adapter needed.
Best Vacuum Match for DeWalt Tools
For most 20V MAX hand tools, a 6 to 12 gallon shop vac with a HEPA filter bag works well. Run the hose at the shortest practical length. Keep the filter clean. Replace the filter bag before it is full.
For miter saw dust collection, a dedicated dust collector with a 4-inch hose and a sawdust bag offers better capacity. Shop vacs fill fast when cutting hardwood or framing lumber.
Use our configurator to find the exact adapter for your DeWalt tool and your vacuum setup.