Head to head
Ifor Williams General Duty vs Lider 39920
The Ifor Williams General Duty is rated 650kg heavier gross. The Lider 39920 is 46cm (1.5ft) longer inside and is 12cm wider inside.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams General Duty is rated 650kg heavier gross.
- Internal length: the Lider 39920 is 46cm (1.5ft) longer inside.
- Internal width: the Lider 39920 is 12cm wider inside.
Specifications side by side
| Ifor Williams General Duty | Lider 39920 | |
|---|---|---|
| Gross weight | 1400kg to 2700kg depending on model | 750kg |
| Internal length | 1.84m (6ft) to 3.71m (12ft 2in) | 230cm |
| Internal width | 1.23m (4ft) to 1.71m (5ft 6in) | 135cm |
| Axles | Single or twin axle | 1 |
| Unladen weight | - | 370kg |
| Internal height | - | 157cm |
| Brakes | - | Unbraked |
Sources: Ifor Williams General Duty, Lider 39920. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the General Duty if...
- you want one that is rated 650kg heavier gross
Ifor Williams's entry-level flatbed range, bought by householders, gardeners and small trades for tip runs, garden waste and general loads. It is the trailer most UK hire yards keep several of, since one size or another suits almost any small job.
Listed by
- John Page Trailers Ltd - Ashford, Biddenden
Buy or hire the 39920 if...
- you want one that is 46cm (1.5ft) longer inside
- you want one that is 12cm wider inside
The smallest box van in the range, for buyers who want lockable, weatherproof storage on the move without moving up to a braked twin-axle trailer.
Listed by
- Lider Trailers - Accrington, Blackburn
Common questions
What is the difference between the Ifor Williams General Duty and the Lider 39920?
The Ifor Williams General Duty is rated 650kg heavier gross. The Lider 39920 is 46cm (1.5ft) longer inside and is 12cm wider inside. The Ifor Williams General Duty is a small flatbed/general purpose trailer range; the Lider 39920 is a an unbraked single-axle enclosed box van trailer rated at 750kg gross weight..
Can I tow the Ifor Williams General Duty or the Lider 39920 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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