For over three decades Certified has established a reputation as Central PA’s Leading Window, Siding and Door Distributor. A reputation built on a solid foundation of quality products, product expertise, dependable delivery, competitive pricing, and a dedication to serving our customers.
Certified prides itself on being Central PA’s premier source for windows, siding, entry and garage doors.
Renewal by Andersen is the exclusive start-to-finish window replacement division of Andersen Corporation—the most recognized window brand in the U.S. Renewal by Andersen expanded to Central PA in 2006.