The Metal Building Material Business segment provides housing window sashes, building sashes, store facades, sashes for low-to-medium rise buildings, entranceway doors, various types of shutters, curtain walls, gates, carports, banisters, tide barriers, and smoke insulated screens.

FORBES: #1,274 Lixil Group

And joining us now with another window on the housing crisis is Arturo de los Santos.

NPR: Freddie Mac Good For Business, Bad For Homeowners?

Attia's creation is what he calls the Roundhouse, a modular window-wrapped structure that's supposed to make up for the bad name prefab housing has gotten over the years.

FORBES: The House Goes Round

NPR's Chris Arnold talked to former employees of the company who offer a window into the hyper-aggressive practices that allegedly spread through the subprime lending industry during the housing boom.

NPR: Former Ameriquest Workers Tell of Deception