All Aluminum Frame Construction Spring Suspension w/ EZ Lube Hubs 2" x 4" Main Frame 16" O.C. Wall Construction 24" O.C. Floor Construction 24" O.C. Roof Construction LED Lighting Tongue Jack 16" Aluminum Stoneguard Aluminum Camlock (Double Rear Door Models) One Piece Aluminum Roof Screwed Seams .030 Exterior Skin 2' Sloped V-Nose (2) Plastic Sidewall Vents 2.5" Top Trim & 1.5" Bottom Trim Plastic Door Holdbacks (1) 12V Interior Done Light w/Switch LED Strip Taillights 4.mm Lauan Interior Wall Liner 3/4" Engineered Wood Flooring 1 Year Limited Warranty 2 Year Advantage Roadside Assistance