Head to head
Ifor Williams Business Inabox vs Stewart GX 18-23 S
The Ifor Williams Business Inabox is 4 tonnes lighter empty.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Stewart GX 18-23 S weighs 4 tonnes more empty.
Specifications side by side
| Ifor Williams Business Inabox | Stewart GX 18-23 S | |
|---|---|---|
| Unladen weight | 1900kg (Workshop M) | 5,900kg |
| Gross weight | 3500kg | - |
| Internal length | 4.45m (Workshop M) | - |
| Internal width | 2.18m | - |
| Overall length | 5.96m (Workshop M) | - |
| Carrying capacity | - | 20,000kg |
| Cubic capacity | - | grain 23m3, silage 39m3 |
| Body | - | 6700 x 2450 x 1500mm |
Sources: Ifor Williams Business Inabox, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Business Inabox if...
- you want one that is 4 tonnes lighter empty
A trailer shell fitted out as a mobile workshop, shop or catering unit rather than a load carrier. Tradespeople and mobile caterers buy it to take a fitted-out workspace to a site rather than build one into a van.
Listed by
- Norfolk Trailers - Norwich
Buy or hire the GX 18-23 S if...
An 18-23 tonne tipping trailer built for grain and silage haulage, with an easy-sheet system so one person can cover a loaded trailer without climbing on top. Its monocoque steel body gives it the extra capacity over Stewart's standard flat trailers.
Listed by
- Rising Sun Trailer Hire - York
Common questions
What is the difference between the Ifor Williams Business Inabox and the Stewart GX 18-23 S?
The Ifor Williams Business Inabox is 4 tonnes lighter empty. The Ifor Williams Business Inabox is a trailer-based mobile workshop, boxvan or catering/retail unit; the Stewart GX 18-23 S is a twin-axle tipping grain and silage trailer with an easy-sheet cover system.
Which is lighter, the Ifor Williams Business Inabox or the Stewart GX 18-23 S?
The Ifor Williams Business Inabox. It is 4 tonnes lighter empty than the Stewart GX 18-23 S.
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.