Head to head
Ifor Williams Business Inabox vs Ifor Williams CT136
The Ifor Williams CT136 is 1.5 tonnes lighter empty. The Ifor Williams Business Inabox is rated 2.1 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams Business Inabox weighs 1.5 tonnes more empty.
- Gross weight: the Ifor Williams Business Inabox is rated 2.1 tonnes heavier gross.
Specifications side by side
| Ifor Williams Business Inabox | Ifor Williams CT136 | |
|---|---|---|
| Gross weight | 3500kg | 1,400kg single axle / 2,000kg twin axle / 2,600kg CT136HD |
| Unladen weight | 1900kg (Workshop M) | 400kg single axle / 495kg twin axle |
| Internal length | 4.45m (Workshop M) | - |
| Internal width | 2.18m | - |
| Overall length | 5.96m (Workshop M) | - |
| Bed | - | 4.00m x 1.84m |
Sources: Ifor Williams Business Inabox, Ifor Williams CT136. 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 rated 2.1 tonnes heavier gross
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 CT136 if...
- you want one that is 1.5 tonnes lighter empty
The accessible end of car transport, for towing a road car, a track-day car or a small classic. Motorsport and classic-car owners tend toward the twin-axle and HD versions for the higher gross weight and the tie-down provision.
Full CT136 specifications →Common questions
What is the difference between the Ifor Williams Business Inabox and the Ifor Williams CT136?
The Ifor Williams CT136 is 1.5 tonnes lighter empty. The Ifor Williams Business Inabox is rated 2.1 tonnes heavier gross. The Ifor Williams Business Inabox is a trailer-based mobile workshop, boxvan or catering/retail unit; the Ifor Williams CT136 is a flatbed car transporter, single or twin axle.
Which is lighter, the Ifor Williams Business Inabox or the Ifor Williams CT136?
The Ifor Williams CT136. It is 1.5 tonnes lighter empty than the Ifor Williams Business Inabox.
Can I tow the Ifor Williams Business Inabox or the Ifor Williams CT136 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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