Contractor Grade, adj.

"Contractor Grade". Magic words. The bumper sticker saying "Licensed contractors build confidence" springs up in my mind, and my posture straightens, and my hand is twitching uncontrollably to salute whoever came up with that.

That is, until another phrase pops up. "Shop Talk". Defined as "way to talk about your business in presence of outsiders in a way that only others in the same business can understand".

So what does it mean, really?

"The cheapest product that is necessary to check off the mark indicating a presence of an entity as an integral or optional part of more complicated entity".

Anything even remotely decent will be marked up as an "upgrade".