ECN Forum Forums Code Related Discussion NEC & other Code issues 1900 box??

Back in the 70's I worked for a guy the called the boxes 1900 boxes and called the raised covers:
* 19T = single toggle
* 19TT = double toggle
* 19D = single duplex
* 19DD = double duplex
* 19TD = toggle and duplex

Stuck in my head all these years.
When I make a material list I always use these numbers. My shorthand.
Can't order them that way. No one knows what you are talking about.