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Oneida Dust Deputy 2-1/2 in inlet: measured 2-1/2 in inlet / outlet. 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

Oneida Dust Deputy 2-1/2 in inlet dust port size

The measured dimensions of the Oneida Dust Deputy 2-1/2 in inlet and the hose sizes it mates with.

ID57 mm2-1/4 in, 57 mm

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

Measured port dimensions

Port typefemale socket (hose goes into it)
Inner diameter (ID)2-1/4 in, 57 mm
Manufacturer designation2-1/2 in inlet / outlet
Mating diameter (mm)57

Shop notes

Found on: Oneida Dust Deputy cyclone separators on a shop vac.

The Dust Deputy cyclone uses 2-1/2 in inlet and outlet fittings sized for a shop-vac hose. A 2-1/2 in hose cuff seats in each, one to the tool and one to the vac, so the cyclone drops in line with a standard shop-vac hose.

Questions and answers

What is the port type of the Oneida Dust Deputy 2-1/2 in inlet dust port size?

female socket (hose goes into it)

What is the inner diameter (id) of the Oneida Dust Deputy 2-1/2 in inlet dust port size?

2-1/4 in, 57 mm

What is the manufacturer designation of the Oneida Dust Deputy 2-1/2 in inlet dust port size?

2-1/2 in inlet / outlet

What is the mating diameter (mm) of the Oneida Dust Deputy 2-1/2 in inlet dust port size?

57