Printed in the top left corner of the top, on the phenolic board at the back, and on a sticker.
overall: 8 in x 26 in x 11 1/2 in
The rack contains five vacuum tubes of varying type. There are 16 coaxial connectors boardering object. At one end there is a connector. On the opposite side there is a densly populated phenolic board. "NR3701-Box1#1 us driver arithmetic rack #5" is handwritten in red on a paper note taped to the top of the object.