Based on wood ice bunker refrigerator cars built in the 1930s to 1940s
 
Wood cars operated into the 1970s due to superior insulation and corrosion resistance
 
Correct lower height
 
Wood sides with correct narrow doors, hinge and latch details
 
Realistically detailed Dreadnaught steel corrugated ends
 
Finely detailed AB brake gear
 
Correct RP-25 turned metal wheels
 
Proto MAX(TM) metal knuckle couplers