• 9/16" Insulated glass on Mark 50, Mark 50 HP and Mark 50XHP provides energy saving thermal efficiency
• Mark 40, Mark 40 HP and Mark 40 XHP single glazed with DSB, or 3/16" or 1/4"
• 13/16" Sash depth adds structural integrity Interlocking meeting rail minimizes air and water infiltration
• Optional three dimensional grid muntins on Mark 40, Mark 40 HP and Mark 40 XHP (not shown)
• Optional 13/16" Colonial muntins sealed internally on Mark 50, Mark 50 HP and MARK 50 XHP (not shown)
• Integrated lift rail for easy open and close action of operable sash
• Full perimeter sash fin seal weather-strip and vinyl flap at sill reduces possibility of air and water infiltration
• 2" Frame depth provides a strong, heavy construction
• Half-Screens are a standard feature, allowing ventilation while protecting against insect infiltration (not shown)
• Snap in glazing bead for easy replacement of glass unit
• Block-and-tackle balance system assures ease of opening and closing
• Precision cut aluminum frame and sash components form a strong, durable assembly
• Operable bottom sash is removable
• Automatic sill latch provides comforting security and keeps sash unit tight and secure and helps seal out the weather. (Single or dual latches as width requires)
• Available in Bronze or White
• Available in either Fin or Flange Construction
• Mark 40 - Single-Hung Windows with Single Glazing
• Mark 40 HP - High-Performance Windows with Single Glazing
• Mark 40 XHP - Extra-High Performance Windows with Single Glazing
• Mark 50 - Single-Hung Windows with Insulated Glass System
• Mark 50 HP - High-Performance Windows with Insulated Glass System
• Mark 50 XHP - Extra High-Performance Windows with Insulated Glass System
• Glass options include tinted or colored glass and turtle glass in Mark 40, Mark 40 HP and Mark 40 XHP and tinted, turtle and Low-E Glass in Mark 50, Mark 50 HP and Mark 50 XHP

• 9/16" Insulating glass in TW-1 Series provides energy saving thermal efficiency
• TW-4 Series is single glazed with DSB, or 3/16"
• Optional 13/16" Colonial muntins sealed internally on TW-1. Not available on TW-4 (not shown)
• Half-Screens are a standard feature, allowing ventilation while protecting against insect infiltration (not shown)
• Rigid vinyl glazing bead at exterior bottom and interior top reduces air and water infiltration and enables easy replacement of glass unti from inside
• Precision cut aluminum frame and sash components form a strong, durable assembly
• 2-3/8" Frame depth provides a strong, heavy construction
• Block and tackle balance system assures ease of opening and closing
• Secured vent latch allows for secure night ventilation and acts as secondary lock in the closed position
• 1-3/16" Sash depth provides structural integrity
• Operable bottom sash tilts-in for easy cleaning and operation
• Full perimeter sash fin seal weather-strip and vinyl flap at sill reduces possibility of air and water infiltration
• Integrated lift rail for easy open and close action of operable sash
• Automatic sill latch provides comforting security and keeps sash unit tight and secure and helps seal out the weather. (Single or dual latches as width requires)
• Available in White or Cream
• Available in either Fin or Flange Construction
• TW-4 - Single-Hung Windows with Single Glazing
• TW-1 - Single-Hung Windows with Insulated Glass System
• Glass options include tinted and turtle glass in TW-4 Series, and tinted and Low-E Glass in TW-1 Series

Single-Hung Windows Available in Fin and Flange Construction
Horizontal Rolling Windows in Fin and Flange Construction

In independent testing, these impact-resistant windows were impacted with a 9 foot long 2 x 4 weighing 9 pounds that was fired at the window by an air cannon at speeds of 50 feet per second. After impact, windows were buffeted by combined positive and negative pressure simulating hurricane force winds. During the 5-hour testing period the impact-resistant glass remained in the window frame and was not breached. The window continued to function operationally after the testing was completed.

Impact-Resistant Glass Construction

Impact-Resistant Windows feature a 5/16" thick laminated safety glass to resist impact. The lite is constructed of two, 1/8" thick annealed glass panels laminated with an interlayer membrane. The interlayer membrane becomes transparent during the laminating process and forms a 5/16" thick panel. This unique laminated glass system creates an impact-resistant barrier and delivers outstanding thermal efficiency.