Weatherlok Series 3900 and 3100

The 3900 series is the top product for premium vinyl replacement windows. You will get superior energy efficiency along with extreme durability.

Series 3100 has a lot to offer and the superior workmanship has translated into reliability and durability. It is loaded with features such as energy efficiency and ease of operation.

Weatherlok replacement windows come with a standard lifetime warranty on the vinyl components of the window as well as the screens. You also have the option of purchasing a lifetime warranty against glass breakage – which already comes standard on the 3900 series.

Standard Weatherlok Window Features:

• DP 60 rating tested on 36″ x 74″ windows
• Full interlocking lock and meeting rails
• Low-E glass with argon gas keeps indoor temperatures comfortable and consistent
• Sloped sill reduces air filtration and allows for easy water runoff
• Fusion-welded sashes and frames add strength and boost thermal performance
• The beveled mainframe offers a classic exterior appearance
• 3/4″ constant force coil balance permits easy sash movement
• Dual push-button night latches provide optimum ventilation
• Dual low-profile, positive-action cam locks increase security on lock standards of 27 1/4″ or wider
• Rubber bulb seal helps block outside air
• Full vinyl sash dam on the sill and high-performance weather stripping protect against air infiltration
• The full screen is supported by a strong extruded aluminum frame
• Transferable limited lifetime warranty
• 4 1/4″ frame thickness enhances appearance as well as structural integrity
• Jamb depth is 3.25″
• Integrated, slim-line lift rails allow for a smooth sash operation
• A lifetime glass breakage warranty ensures the longevity of your windows