Square in Ceiling Tiles 8.28.11

This is an AC vent in the ceiling at a grocery store we went to this afternoon. I'm not sure if this is abstract, but it is a very clear shot.

[Ann H. LeFevre]

Yes, I think you could call this an abstract, even though you can tell it's vent. It's abstract because you are really working with the squares as your subject rather than just the vent. Good shot Sam!