Head to head
Ifor Williams HB403 vs Indespension Alumax 10' x 5'7" Plant Trailer
The Indespension Alumax 10' x 5'7" Plant Trailer carries 2,077kg more and is rated 1.9 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Indespension Alumax 10' x 5'7" Plant Trailer carries 2,077kg more.
- Gross weight: the Indespension Alumax 10' x 5'7" Plant Trailer is rated 1.9 tonnes heavier gross.
- Unladen weight: the Ifor Williams HB403 weighs 177kg more empty.
Specifications side by side
| Ifor Williams HB403 | Indespension Alumax 10' x 5'7" Plant Trailer | |
|---|---|---|
| Gross weight | 1600kg | 3500kg |
| Unladen weight | 767kg | 590kg |
| Payload | 833kg | 2910kg |
| Internal length | 3.08m | - |
| Internal width | 1.30m | - |
| Internal size | - | 3.05 x 1.70 |
| Bed height | - | 367mm |
Sources: Ifor Williams HB403, Indespension Alumax 10' x 5'7" Plant Trailer. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB403 if...
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the Alumax 10' x 5'7" Plant Trailer if...
- you want one that carries 2,077kg more
- you want one that is rated 1.9 tonnes heavier gross
- you want one that is 177kg lighter empty
A lightweight plant trailer with a low bed and shallow ramp angle, aimed at mini digger hire and contractors who want a high payload from a 3.5 tonne gross weight.
Full Alumax 10' x 5'7" Plant Trailer specifications →Common questions
What is the difference between the Ifor Williams HB403 and the Indespension Alumax 10' x 5'7" Plant Trailer?
The Indespension Alumax 10' x 5'7" Plant Trailer carries 2,077kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer; the Indespension Alumax 10' x 5'7" Plant Trailer is a 10 ft x 5 ft 7 in lightweight 3.5 tonne plant trailer.
Which is lighter, the Ifor Williams HB403 or the Indespension Alumax 10' x 5'7" Plant Trailer?
The Indespension Alumax 10' x 5'7" Plant Trailer. It is 177kg lighter empty than the Ifor Williams HB403.
Which carries more, the Ifor Williams HB403 or the Indespension Alumax 10' x 5'7" Plant Trailer?
The Indespension Alumax 10' x 5'7" Plant Trailer, by 2,077kg.
Can I tow the Ifor Williams HB403 or the Indespension Alumax 10' x 5'7" Plant Trailer 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.
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.