Apex Instruments Custom Trailers Division

Mobile Demonstration Unit

Mobile emissions labs tailored to the stack tester’s needs. 

USDA Mobile Demonstration Unit

  • 14,000 lb Gross Vehicle Weight Rating
  • 10 in. x 12 lb I-Beam Frame 
  • Steel Frame Laboratory enclosure with Seamless Aluminum Roof 
  • Steel Frame Generator Enclosure

TYPE: Modified Gooseneck

CLIENT: United States Department of Agriculture

TRAILER: 26 Ft Deck Over Straight Deck

VALUE: 

COMPLETED: February 2023

Gooseneck Trailer

  • 2 5/16 in. Adjustable Coupler 
  • 3 in. Structural Channel Crossmembers 
  • 4 in. Double Channel Deck Frame Runners 
  • Rub Rail, Stake Pockets, and Pipe Spools 
  • (4) Standard 3 in. D-Rings 
  • Spare Tire and Mount 
  • Chain Box 
  • Diamond Plate Fender Plates 
  • Cambered Dexter Nev-R-Adjust Spring Axles 
  • Multi-Leaf Slipper Spring Suspension 
  • E-Z-Lube Hubs 
  • Electric Brakes 
  • (2) 12,000 lb. Drop-Leg Jacks 
  • Treated Pine 2 in. X 6 in. Floor 
  • 235/80R16 Radial Tires 
  • LED Lighting 
  • Molded/Sealed Harness with Resistors 
  • 7-Way Receiver Female Plug with Adapter 

Laboratory Enclosure

  • Aluminum Exterior Walls 
  • 15 in. X 24 in. Window with Screen 
  • 36 in. X 70 in. Door with Screen 
  • Rubber Coin Flooring 
  • Water Resistant Sub-Floor 
  • R10 Insulation Throughout 
  • One Set of Four Tread Steps 
  • 13,500 B.T.U. Rooftop AC unit 
  • MaxxAir Rooftop Vent 
  • 30amp Electrical Service Entry Package (30amp RV Shore Power Plug, Wiring, (2) 100aH Deep Cycle Batteries) 
  • Base & Wall Cabinets  

Electrical

  • (4) 110V Interior GFCI Outlets 
  • Under Cabinet Lighting 
  • Ceiling Light 
  • 12V Power Outlet

Generator Enclosure

  • Generator Door w/ Vent 
  • Fully Insulated R10 for Sound 
  • Generator Prep Package (30amp Auto Transfer Switch, Wiring, and Control Panel)  

Our Projects

View examples of our projects for past clients. 

Contact Our Custom Trailers Division Today