1-7/8 in shop-vac hose diameter vs 2-1/2 in shop-vac hose diameter: specs compared
Updated 05 September 2026.
57 mm
2-1/2 in shop-vac hose diameter wins on mating diameter
On mating diameter, 2-1/2 in shop-vac hose diameter leads: 57 mm versus 48 mm.
| Spec | 1-7/8 in shop-vac hose diameter | 2-1/2 in shop-vac hose diameter |
|---|---|---|
| Fitting type | female cuff (goes over a port or into a socket) | female cuff (goes over a port or into a socket) |
| Inner diameter / bore (ID) | 1-7/8 in, 48 mm | 2-1/4 in, 57 mm |
| Nominal size | 1-7/8 in (approx 48 mm) | 2-1/2 in nominal, cuff approx 2-1/4 in OD |
| Mating diameter (mm) | 48 | 57 |
| Cuff outer diameter (OD) | 2-1/4 in |
Questions and answers
Which has the higher mating diameter, 1-7/8 in shop-vac hose diameter or 2-1/2 in shop-vac hose diameter?
On mating diameter, 2-1/2 in shop-vac hose diameter leads: 57 mm versus 48 mm.
How do 1-7/8 in shop-vac hose diameter and 2-1/2 in shop-vac hose diameter compare?
On mating diameter, 2-1/2 in shop-vac hose diameter leads: 57 mm versus 48 mm.