PortMatch
PORT / HOSE

4 in dust-collector hose diameter

The real bore and cuff diameter of the 4 in dust-collector hose and what it connects to.

ID102 mm4 in, 102 mm

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

Measured hose dimensions

Fitting typefemale cuff (goes over a port or into a socket)
Inner diameter / bore (ID)4 in, 102 mm
Cuff outer diameter (OD)4-1/4 port in
Nominal size4 in ID

Shop notes

Used on: Single-stage and cyclone dust collectors, table saws, jointers and planers.

The 4 in flex hose seats on a port that is 4 in OD at the small end and about 4-1/4 in at the large end. It is a low-vacuum, high-volume line and does not step down cleanly to a shop-vac hose, so a collector and a vac serve different tools.