2x6 Tube Steel Main Rails (8.5 wide) 2x5 Tube Steel Main Rails (7wide) 2x4 Tube Steel Main Rails (6wide TA) 2x3 Tube Steel Main Rails (4w, 5w & 6w SA) 16" O/C Floor Crossmembers 16" O/C Tube Steel Wall Studs 24" O/C Tube Steel Roof Bows Triple Tube A-Frame on 20' & Above 2000#, 3500# or 5200# Lippert Spring Axle (s) Electric Brakes on 7wide Single Axles Wide Track Axle/s on 7wide ST205/75R15 Radial Tires (SA/TA-TA2) ST225/75R15 Radial Tires(TA3 Only) Silver Mod Wheels w/Chrome Center Caps 2" Ball Coupler on SA 2-5/16" Ball Coupler on TA 7 Way Electrical Plug (4-Way on SA) Seamless Aluminum Roof Painted Tongue/Rear Sill Black 3" Heavy Duty Flat Trim Top 1-1/2" Flat Trim Bottom .030 Screwless Exterior Aluminum 24" Tall ATP Slant Stoneguard ATP Fenders Framed for Roof Vent (1) Pair Plastic Flo-Thru Vents 24" Flat Top Slant Wedge on 4-6x Models 30" Flat Top Slant Wedge on 7x Models 36" Flat Top Slant Wedge on 8.5x Models 3/4" Drymax Floor 3/8" Drymax Walls No Side Door on 4&5 Wide Models 32" Aluminum Frame Side Door on 6, 7, 8.5 Wide Models Ramp Rear Door w/Flap Beavertail on 8.5x20 and Above (4) 5000# Recessed D-Rings on 8.5x20 and Above Zinc Door Hardware Aluminum Door Holdbacks LED Strip Tail Lights LED Marker Lights 12V LED Dome Light w/Switch DOT/CSA Approved Safety Equipment 6" Barrier Tape Limited 3 Year Structural Warranty