PrimeLok Single Hung

The PrimeLok Single Hung – from the Mastic Series

Distinctive Style & Superior Design

The PrimeLok new construction maintenance-free vinyl window system offers the ultimate line of windows to builders and homeowners alike. The patented integral J-channel and welded nail fin are designed for ease of application and sealing out air and water penetration. The beauty of the new soft curved sash design and unique cove mold look offer a more traditional wood window interior and exterior appearance without the maintenance. PrimeLok windows are strong and tough due to the multi-chamber heavy wall construction; fusion welded frame/sash and precisely engineered interlocking vinyl window extrusions.

Maximum energy and sound transmission efficiency are achieved by ¾” “Warm Edge” insulated glass, the ultimate in window design and the use of premium hardware and weather stripping. Finally, add the natural beauty of the maintenance free finish of Sunshield vinyl, which retains its sheen year after year.

  • Fusion Welded Sash and Mainframe
  • Unique Cove Mold Look
  • 5 Degree Positive Sloped Sill
  • Deeply Pocketed Head
  • Heavy Wall Construction
  • 1.5″ Integral Welded Nail Fin
  • Patented Integral J-Channel
  • Proven Balance System
  • New Soft Curved Sash Design
  • Attractive Integral Lift Rail
  • Tilt-in Bottom Sash
  • Recessed-in Tilt Latches
  • ¾” Intercept Insulated Glass System
  • Warm Edge Technology
  • Interlocking Meeting Rail
  • Die Cast Cam Locks and Keepers
  • Two Layer of Weather Stripping
  • Optional Low E Glass
  • Optional Jamb Extension Products

The Vinyl, The Spacer, The Glass

The Vinyl

The design of the window and the quality of the vinyl extrusion insures the beauty and performance of the finished product. American Window is partnered with the leading window extruder in the industry, Vision Extrusions Group Ltd. Together, American Window and Vision Extrusions work hard to provide an unmatched product that is second to none.

The Spacer

When selecting windows for your home you want to look for products that give you the quality and performance your home deserves. A good place to start is to look for windows that have Intercept insulated glass.

Intercept is a patented “Warm Edge Technology” spacer system that features a unique one-piece, U-channel design that creates an effective thermal barrier. It, therefore, reduces conductive heat loss through the window. Intercept’s sealed; one-piece design makes it stronger and better at retaining insulating gas than conventional spacer designs. The Intercept spacer is so energy efficient that it keeps the edges of the window glass warmer, making your home more comfortable in the

The Glass

American Window offers some of the most advanced glass technology in our window systems. The optional Solarban 60 Low-E glass is a value-added product that brings energy savings and comfort to your home.

PPG Solarban 60 Solar Control Low-E glass is engineered to provide year-round comfort, keeping your home cooler in the summer by keping out solar heat and warmer in the winter by keeping furnace heat inside.

PPG Solarban 60 Low-E glass helps your home become more energy efficient and comfortable thanks to an almost invisible, microscopically thin coating that blocks out unwanted solar energy and keeps in furnace heat. Additionally, Solarban 60 Low-E significantly reduces the fabric fading effects of ultraviolet light and resists condensation and it’s effects on your home environment.

PPG has pioneered the glass technology found in the world’s best windows, like those of American Window.

Quality Certification

American Window has set the standard for quality and service in the window industry. Our windows and doors are engineered and built to meet the highest standards and specifications in the industry. American Window custom vinyl windows are certified and tested to AAMA and NFRC standards, as well as enjoying a partnership with The Energy Star program.

The Energy Star window program is a voluntary partnership between the US Department of Energy and participating window manufacturers. All of our windows using Solarban 60 Low-E are Energy Star compliant.

The National Fenestration Rating Council (NFRC) is a non-profit, public-private organization created by the window, door, and skylight industry. It has established a voluntary national energy performance rating and labeling system. All windows produced by American Window meet NFRC rating guidelines.

The American Architectural Manufacturers Association (AAMA) is a voluntary organization that establishes material performance standards for the window industry. Our windows meet or exceed the AAMA guidelines.

As you can see, our windows and doors meet or exceed demanding rating requirements, providing a lifetime of top-quality, performance and efficiency.


American Window, manufacturer of a high quality, energy efficient vinyl window system, warrants to you, the original purchaser of our American Vinyl Window and Vinyl Doors, that this product, under normal use and service, will be free of manufacturing and/or material defects as long as you own and reside in the home in which the windows were installed.

  • Window and Sash Frames: Lifetime Coverage
  • Hardware: 5 Years
  • Screens: 5 Years
  • Insulated Glass Unit: 15 Years
  • Coated Windows 10 Years

See Limited Lifetime Transferable New Construction Window Warranty for complete details.


Window Styles:

Choose from the PrimeLok Single Hung, Single 2 Lite Slider, 3 Lite Slider, or Picture Window.


You may add many grid options to the PrimeLok New Construction window. Choose from Colonial Standard, Contour, Brass, Prairie Style (in stock colors or Brass), Diamond Shape (in stock colors or Brass), as a few of the many options available in grids.


Clear glass is standard in all PrimeLok New Construction windows. You may choose to upgrade the Glass with options including Low-E glass, grey-tinted, bronze-tinted, obscure glass, tempered glass and argon gas filled units.


The PrimeLok New Construction windows are available in our standard stock colors of White, Sand, and Clay.

AmeriColor – Color Select Program:

The PrimeLok New Construction windows are now offered in the AmeriColor Color Select Program. We now offer nine exciting exterior colors. Windows are now available in the Mastic Colors: Sandtone, Desert Sand, Wicker, Cameo, Silver Grey, Victorian Grey, and Harbor Grey. Additionally we offer the rich Hunter Green and Architectural Bronze colors. (Some restrictions apply on grids and screening options).


Half fiber screens are standard on the PrimeLok Single Hung New Construction windows.


PrimeLok New Construction windows can be mulled into twin units, triple units, and stacked units at the factory or may be mulled on the construction site.

Wood/Vinyl Accessories:

Additional Wood and Vinyl accessories are available including applied wood or vinyl jamb extensions in standard 4 9/16″ and 6 9/16″ sizes and interior jamb extensions for drywall or wood extension applications.

Ready to get started with American Window?