3 Metre Flat Top Trailer

This plan is for a tough, flexible and versatile dual axle Flat Top Trailer in the size (10 x 6 ft.) 3000×2000 (Plus optional 9 x 6 ft. & 10 x 8 ft.). The Subframe is of strong RHS with plenty of support using 4 cross members on the bottom Subframe and 7 on the top Subframe. The body parts can be made at most trailer suppliers and sheet metal shops.

Included in this Trailer Plan
  • Drawings
  • Pictures
  • Part and cut lists
  • Construction tips
  • General advice
  • All in PDF file Format



With the plans, you will be able to build your own trailer, and save a lot of money, as to buy a trailer like this is very expensive. Plans include all parts and tool box drawings, cut lists.

The height of the uprights in between the two chassis will be determined by the Tyre Heights.

The Floor Sheet removed to give a good view of the Subframe setup.

This is a 50 x 50 SHS used to carry the drop in centre gate post

Tandem Roller Rocker Suspension is used in this Trailer

Drop down and removable Tailgates on the three sides used for convenience.

Optional under body tool boxes can made or purchased from most tool box manufactures

The plans conform to the Australian National Code of Practice – Building Small Trailers (VSB1). Trailers built to comply with this code of practice can be registered for on-road use in Australia


    Tandem Dual Axle Flat Top Trailer
  • Size – 10 x 6 ft. (3000 x 2000 mm) & (9 x 6 ft. & 10 x 8 ft.)
  • Gross Vehicle Mass (GVM) – (Single Braked Axle 2000kg)
  • (Dual Electric Braked Axles with Brake Away System 3400kg)
  • Weight of Trailer Only (Tare) approximately 550kg
  • Chassis Construction – RHS
  • Tandem Roller Rocker Suspension
  • Drop Down Rear and Side Gates
  • Removable Side Gate Centre Post
  • Front Tool Box
  • Swing up Jockey Wheel
  • Spare Wheel Mount