"A PICTURE showing two views (rear and side x-ray) of a semi-truck trailer equipped with a ventilation inspection system. Show exactly 9 rigid horizontal tubes (PVC or poly), all running only in the X-direction (from front to back of trailer). Three tubes are mounted along the floor, three along the ceiling, and three at mid-height (4 feet), each aligned left, center, and right. No vertical, up-down, or side-to-side pipes. Rear view should show 3 horizontal pipes at each of the 3 levels (top, middle, bottom). Side view should show all 9 pipes running front to back. Trailer is lightly loaded with pallets, but focus is on the pipe placement. No text Voir plus