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Ifor Williams HB510XL vs Woodford Eco Box

The Ifor Williams HB510XL is rated 3 tonnes heavier gross.

Last reviewed 13 September 2026

Ifor Williams HB510XL
Ifor Williams HB510XL - image: Universal Trailers
Eco Box
Woodford Eco Box

Key differences

Specifications side by side

Ifor Williams HB510XLWoodford Eco Box
Gross weight3500kg500kg or 750kg options
Unladen weight1290kg205-275kg depending on size
Payload2210kg-
Internal length4.25m-
Internal width1.74m-
Dimensions-3,080 x 1,595 x 1,960mm external (largest, ECO745)
Internal load space-2,100 x 1,175 x 1,470mm (ECO745)
Axle-Single axle, unbraked

Sources: Ifor Williams HB510XL, Woodford Eco Box. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the HB510XL if...

  • you want one that is rated 3 tonnes heavier gross

For owners of taller or longer horses who find the standard HB511 too tight, giving extra internal length on the same 3500kg chassis so it stays towable by a suitably rated 4x4.

Listed by

Full HB510XL specifications →

Buy or hire the Eco Box if...

A lightweight box trailer built to order in Norfolk, bought by tradesmen and small businesses who want secure, lockable load space without the running costs of a van. It comes in four sizes so buyers can match it to what they need to carry.

Listed by

Full Eco Box specifications →

Common questions

What is the difference between the Ifor Williams HB510XL and the Woodford Eco Box?

The Ifor Williams HB510XL is rated 3 tonnes heavier gross. The Ifor Williams HB510XL is a an extra-length double horsebox trailer; the Woodford Eco Box is a lightweight single-axle box trailer for general and van-replacement use.

Can I tow the Ifor Williams HB510XL or the Woodford Eco Box 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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