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Ifor Williams TT3621 vs Indespension Alumax 10' x 5'7" Plant Trailer

The Indespension Alumax 10' x 5'7" Plant Trailer is 400kg lighter empty and carries 400kg more.

Last reviewed 13 September 2026

Ifor Williams TT3621
Ifor Williams TT3621 - image: Norfolk Trailers
Indespension Alumax 10' x 5'7" Plant Trailer
Indespension Alumax 10' x 5'7" Plant Trailer - image: Indespension

Key differences

Specifications side by side

Ifor Williams TT3621Indespension Alumax 10' x 5'7" Plant Trailer
Gross weight3500kg3500kg
Unladen weight990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres)590kg
Payload2510kg (195/60R12C) or 2500kg (185/70R13C)2910kg
Internal length3.62m / 11'9"-
Internal width1.95m / 6'5"-
Internal size-3.05 x 1.70
Bed height-367mm

Sources: Ifor Williams TT3621, 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 TT3621 if...

The largest Ifor Williams tipper. A 3.6m by 1.95m body is chosen for bulky, lighter loads - green waste, clearance and bark - where volume runs out before weight does, and it is a staple of plant and tool hire fleets. Formerly sold as the TT126.

Listed by

Full TT3621 specifications →

Buy or hire the Alumax 10' x 5'7" Plant Trailer if...

  • you want one that is 400kg lighter empty
  • you want one that carries 400kg more

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 TT3621 and the Indespension Alumax 10' x 5'7" Plant Trailer?

The Indespension Alumax 10' x 5'7" Plant Trailer is 400kg lighter empty and carries 400kg more. The Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping; 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 TT3621 or the Indespension Alumax 10' x 5'7" Plant Trailer?

The Indespension Alumax 10' x 5'7" Plant Trailer. It is 400kg lighter empty than the Ifor Williams TT3621.

Which carries more, the Ifor Williams TT3621 or the Indespension Alumax 10' x 5'7" Plant Trailer?

The Indespension Alumax 10' x 5'7" Plant Trailer, by 400kg.

Can I tow the Ifor Williams TT3621 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.

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