Dallas, TX

Atrium Windows and Doors, Inc.

Atrium Corporation

Atrium Extrusion Systems, Inc.

Thermal Industries, Inc.

Champion Window, Inc.

American Screen Manufacturers, Inc.

Berkeley Springs, WV

Frederick, MD

Park City, UT

Bmac Services Co., Inc.

Coated Sand Solutions, LLC

U.S. Silica Holdings, Inc.

U.S. Silica Company

USS Holdings, Inc.

Middleton, WI

Springs Industries, Inc.

Salt Lake City, UT

Nutrabrands, Inc.

Palo Alto, CA

Joplin, MO

Marmic Fire & Safety Co Inc

Springville, UT

Salem, UT

Modere, Inc.