Boss cargo trailers logo.


Custom 8.5 X 18 Tandem Axle Enclosed Trailer

From: $6,650.00

(877) 495-1777

Some trailers shown may have upgraded options.

This 18-foot-long enclosed cargo trailers is a great size for many uses.  The tandem axle holds more weight and comes with electric brakes! This trailer measures 8.5 X18 and sits on a tandem axle. Comes in choices of colors and add-on options. Top-quality construction.

Standard Features and Specifications

Standard Features and Specifications

16″ On Center Cross Members
24″ On Center Tubing Roof Members
16″ On Center Tubing Sidewalls
.080 Polycor
Semi-Screwed Exterior
3/8″ Plywood Walls
3/4″ Plywood Floors
Interior Height 78″
ST205 15″ Radial Tires
3500 lb. Drop Leaf Spring Axles
Aluminum Fenders
7 way plug
2 5/16″ Coupler
Galvalume Roof
Side Door with ATP covered Stepwell
Heavy Duty Ramp Door with Flap
2000 lb. A-Frame
Jack with Sand Foot
E-Z Lube Hubs
V-Nose with 24″ Stone Guard
Door Hold Back
12-volt Dome Light
LED Full Light Package
Side Wall Vents
No show beavertail
6″ Steel Tube Main Frame

SPECIFICATIONS (may change with upgrades)
Dimensions: Interior Measurements:   Interior Length: 18′ Plus 2′ V Nose | Interior Width: 96″ | Interior Width Between Wheel Wells: 83″ | Overall Length: 21’ 10″ | Overall Width: 102″ | Overall Height: 97″ | Hitch Height: 20″ | Ground Clearance: 14″ to bottom of the frame | Rear Ramp Door Width: 91″ | Rear Door Height: 72″

Tires: ST 205/75R15/5 Lug

Weight:  Empty Weight: 3000 lbs.  | Tongue Weight: 450 lbs.  | Payload Capacity: 4000 lbs. with a 3500 lb. Axle | Payload Capacity: 7400 lbs. with a 5200 lb. Axle | GVWR 7000 lbs. with 3500 lb. axles



Navigate through our many options and start designing your custom trailer! When you have added your options, submit your trailer design in the Checkout…we will take it from there!  An experienced sales team member will contact you to carefully review your choices with you to make sure everything works together.  When checking out to submit your quote, know that we will work with you on shipping options based on your preferences.