| 摘要 |
A trailer 10 has a frame 12 with cross members (20). A bottom rail (62) is secured to the frame 12. A top rail (130) is supported by the frame. A plurality of extruded panels (70) are attached to the bottom rail 62 and the top rail (130) to form side walls (22 and 24) and a front wall (26). Each panel (7) is a hollow member with an outside wall 72, and inside wall (74), a first end wall 76 and a second end wall (78). A first outside flange (80) and a first inside flange (82) are integral with the first end wall (76). A second outside flange (90) and a second inside flange (92) are integral with the second end wall (78). When plural panels (70) are connected together to form a trailer wall (22, 24, or 26) first inside flanges (82) are between second inside and outside flanges (90, 92) and second inside flanges (92) are between first inside and outside flanges (80, 82). A passage (99) is formed between adjacent first and second inside flanges (82 and 92) and end walls (76 and 78). The panels (70) form smooth continuous surfaces on the inside and outside trailer walls (22, 24 and 26).
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