$40 million to $50 million

June 3, 2011
55 Park Street Laboratory Building at Yale New Haven (Conn.) Hospital 

11. Massey's Plate Glass & Aluminum Inc.

Previous year rank: 15
Sales: Down 13 percent between 2009 and 2010
Headquarters: Branford, Conn.
Website: www.masseysglass.com
Employees: 110

Massey's Plate Glass & Aluminum Inc., operating since 1972, offers exterior building envelope design, engineering, coordination, in-house fabrication and construction. It operates two locations, in Branford, Conn., and in Warwick, R.I. Last year, it completed an intermodal walkway at T. F. Green Airport, Warwick, R.I.; residence halls and student center on Quinnipiac University's York Hill Campus, Hamden, Conn.; and 55 Park Street, a laboratory building for Yale-New Haven Hospital, New Haven, Conn.

12. Architectural Glass & Aluminum Co.

Brocade office, San Jose, Calif. 

Previous year rank: 10
Sales: Down 37 percent between 2009 and 2010
Headquarters: Alameda, Calif.
Website: www.aga-ca.com
Employees: 57
Locations opened in 2010: 1, Honolulu, with 5 employees

Architectural Glass & Aluminum was founded in 1970 and established in the San Francisco Bay area. Following years of successfully executing contract and service work, AGA has now expanded to become a major Pacific Rim company with full service offices in Alameda, Irvine, Sacramento and Honolulu. AGA serves major metropolitan areas, supporting owners, architects and contractors in the completion of significant monumental projects. The company has completed projects in the states of California, Hawaii, Washington, Alaska and Texas.

Mercy Medical Center Project, Baltimore 

13. TSI / Exterior Wall Systems

Previous year rank: 11
Sales: Down 31 percent between 2009 and 2010
Headquarters: Landover, Md.
Website: www.tsiwalls.com
Employees: 125

TSI / Exterior Wall Systems was established in 1977 and has grown to become one of the largest building envelope, glass and glazing companies in the Baltimore/ Washington, D.C. area. The company designs, engineers, fabricates and installs architectural metal and glass curtain wall, metal panel systems and structural glass walls.