Tandem Axle Drop Deck Trailers

Choose from 40 to 53 foot drop deck trailer that includes the extra security and weight bearing capacity of a tandem axle trailer design. Designed to make heavy and extra tall loads easier to maneuver, the lower bed of the steel drop deck trailer has a low center of gravity that grants more height clearance to work with.

Model Number

Trailer DescriptionTare Weight (lbs)Closed Axle10:1 Spread AxleTriple Axle
DD4040' Tandem Axle10,720yesN/AN/A
DD4545' Tandem Axle11,420yesyesN/A
DD4848' Tandem Axle11,980yesyesN/A
DD5353' Tandem Axle12,860yesyesN/A
Main Beams
Designed with Camber - built in Spencer facility
Web1/4" high grade 100,000 yield steel
Flange3/8" x 5" high grade 100,000 yield steel
Cross Members
4" x 3.2# 80,000 yield Jr. I-beam on 16" centers
Side Rails
6" x 8.2# structural C channel
Brake Size
16.5" x 7"
Upper Deck Length
Lower Deck Height
Transition Drop from Upper to Lower Deck
Overall Width


  • 3-leaf heavy duty SAF Holland spring suspensions
  • 22.5K Arvin Meritor axles with Wabco ABS brakes (single axle) and 10 bolt hub piloted steel rims 68,000 lbs. GVW
  • Kingpin setting of 24”
  • Holland Atlas 55 series with 2 speed landing gear
  • Rubber mounted LED lights
  • Sealed wiring system w/ 7-way receptacle – designed by Truck-Lite™ for Demco
  • Midship turn signals on all trailers
  • Color coded air lines
  • Steel hand sanded/Phosphate washed for superior paint adhesion
  • All exterior mating surfaces are caulked prior to paint
  • Diamond Vogel polyurethane primer and paint (black)
  • Stake pockets and pipe spooling at 9” intervals
  • Rub rail of 2” x 3/8” flat steel
  • 1-1/8” x 7” Apitong flooring
  • Winch track (driver side)
  • Anti-sail mud flaps (Demco logo)
  • D.O.T. approved conspicuity tape
  • Manifest holder


  • Air Ride 2 Axle Manual Dump Valve
  • Air Ride 2 Axle Electric Dump Valve or 1-2 Axle Electric Dump Valve
  • Air Ride Scale
  • Kingpin setting of 18"
  • ABS Installed on 2nd Axle
  • Polished Aluminum Rims
  • 255/70R 22.5 LRH Import Radial Tires
  • 255/70R 22.5 LRH Domestic Radial Dunlap SP160 Tires
  • Sliding Winches
  • Aluminum Toolbox
  • Front Bulkhead (Removable)
  • Custom Paint Color (Red, Grey, White, Blue)

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