In a two-day marathon design session back in 1961, Andersen’s manager of Research and Development drew the design for the Narroline double-hung window. The Narroline window rolled off the Andersen production line in February 1962. It was completely factory assembled and featured a primed wood exterior frame. Within five years, the Narroline double-hung window accounted for 24 percent of Andersen’s total production volume.
50 years is an impressive run for any building product, and a testament to engineer Vern Fredericksen’s enduring design. In 1966, the product was upgraded with Perma-Shield® exterior cladding, making Narroline double-hung windows the first clad-wood double-hung window ever produced. That set the stage for Narroline windows to become part of history as Andersen’s revolutionary Perma-Shield cladding technology introduced cladding for wood windows and doors to the building products industry.
The low-maintenance exterior was a big hit with customers and sales continued to grow along with other Perma-Shield products. By 1980, products with Perma-Shield cladding accounted for 85 percent of Andersen’s unit sales.
In the 50 years since its debut, total sales of the Narroline window have surpassed 60 million units. In recent years, though, the stalwart Narroline double-hung window’s popularity has waned as Andersen launched other double-hung products. It was announced in February 2012 that Andersen would end production of the Narroline full-frame double-hung window this fall — bittersweet news for many.
While Narroline full-frame products will no longer be made, Andersen will continue manufacturing Narroline conversion kits compatible with Narroline windows made after 1967. The conversion kit (see adjoining story) provides new benefits to old Narroline windows such as tilting sash for easy cleaning and state-of-the-art energy efficiency with High-Performance Low-E4® glass. The conversion kits can be installed without disturbing a home’s interior millwork or exterior trim or siding.