That picture was in a ATHS discussion before. The air intakes definitely had a grill in front of them. The parts book clearly shows the grill. It was common in those days to replace the original air intake with a Farr air cleaner. The air cleaner was about 24" square. I used them in the 60's and into the 70's until Donaldson came out with the dinosaur head like was standard on 4070B Internationals. Factory air filters collected water and the oil level would rise and stop up the filter.
There were many manufacturers of sleeper boxes. I'm not sure if the one pictured is a crawl through or a coffin type. The crawl through had the back window removed. The coffin type only had entry from the end. ICC regulations required a way of communicating with the driver with doubles operations. Some used a string with a bell on it. Some used a tube like the submarines used.
Very few of these trucks survived because the major components such axles, engine and transmission could be used in any truck. When the cab became junk, the usable components were removed and the rest was scrapped. Many were wrecked. Drivers drove sleepy, bounced pills off the windshield, roads were bad and drivers just accepted the fact that a lot of them were going to get killed. About 1/4 of the drivers I knew that lived here in town 60 years ago were killed in a truck.
