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Mirka DEROS sander port: measured 27 mm hose connection. What shop-vac hose fits it and the exact reducer to join it to a 1-1/4, 2-1/2 or 4 inch hose.

Updated 05 September 2026.

PORT / HOSE

Mirka DEROS sander port dust port size

The measured dimensions of the Mirka DEROS sander port and the hose sizes it mates with.

OD27 mm1-1/16 in, 27 mm

Rings drawn to scale from the measured diameters in the table below.

Measured port dimensions

Port typemale spigot (hose goes over it)
Outer diameter (OD)1-1/16 in, 27 mm
Manufacturer designation27 mm hose connection
Mating diameter (mm)27

Shop notes

Found on: Mirka DEROS and DEOS electric random-orbit sanders.

Mirka's electric sanders connect to a 27 mm hose, the same size as the Festool D27 tool tip, so a Festool CT hose plugs straight in. That 27 mm connection is why Mirka sanders pair cleanly with CT-class extractors.

Connect this port

Questions and answers

What is the port type of the Mirka DEROS sander port dust port size?

male spigot (hose goes over it)

What is the outer diameter (od) of the Mirka DEROS sander port dust port size?

1-1/16 in, 27 mm

What is the manufacturer designation of the Mirka DEROS sander port dust port size?

27 mm hose connection

What is the mating diameter (mm) of the Mirka DEROS sander port dust port size?

27