PortMatchMatch any tool dust port to any shop-vac or collector hose, with the exact reducer

Bandsaw 4 in dust port: measured 4 in port, 3.9 in OD / 3.6 in ID. 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

Bandsaw 4 in dust port dust port size

The measured dimensions of the Bandsaw 4 in dust port and the hose sizes it mates with.

OD99 mm3-15/16 in, 99 mm
ID91 mm91 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)3-15/16 in, 99 mm
Inner diameter (ID)91 mm
Manufacturer designation4 in port, 3.9 in OD / 3.6 in ID
Mating diameter (mm)99

Shop notes

Found on: Rikon, Grizzly, Laguna and Jet 14 in and larger bandsaws.

Cabinet bandsaws present the standard 4 in machine port at about 3.9 in outer and 3.6 in inner, so a 4 in flex hose seats over it. It pairs with a dust collector, not a shop vac, because of the low-vacuum high-volume airflow.

Connect this port

Questions and answers

What is the port type of the Bandsaw 4 in dust port dust port size?

male spigot (hose goes over it)

What is the outer diameter (od) of the Bandsaw 4 in dust port dust port size?

3-15/16 in, 99 mm

What is the inner diameter (id) of the Bandsaw 4 in dust port dust port size?

91 mm

What is the manufacturer designation of the Bandsaw 4 in dust port dust port size?

4 in port, 3.9 in OD / 3.6 in ID