Need help identifying yellow panels seen on building under construction?

Question

They were yellow panels. They were being attached to secondary vertical beams; that is, not the main support ones, but the smaller ones that go between the large vertical I-beams. They were inscribed with a brand name, something like "DP Glass Gold" something. They were more or less shaped like squares.

Answer 1

Might that have been "GP DensGlass Gold®"?  if so they were a fiberglass faced gypsum sheathing.

http://www.gp.com/build/product.aspx?pid...