Welded 2" aluminum framing is at the heart of our 4-layer sidewall construction, engineered to make your Laredo strong and durable while creating a fifth wheel or trailer that is easier to tow. Previously found only in RVs at a much higher price point, Laredo's structural integrity assures you of strength, superior insulation, and durability for many years to come. Lite-weight aluminum framing and laminated fiberglass sidewalls make Laredo an easy load for today's heavy 1/2 ton and light 3/4 ton trucks. Engineers have used today's most advanced technology to design Laredo's exclusive Pentagonal Aluminum Frame that is lighter weight, creates straighter walls, and has more aluminum for strength and towability.