Ostaco – Core Plus Window
THE PERFECT FIT
- 4 9/16” vinyl frame with built in nosing
- Thicker exterior sash walls (.090” versus .068”)
- Rated Most efficient by Energy Star
- Warm edge spacers recessed between the panes of glass both minimize glass edge conductivity while optimally containing the argon gas within the sealed units, obtaining a 90% argon gas fill rate
SUPERIOR QUALITY AND DURABILITY
- Fusion Welded vinyl chambers
- Offset groove creates a natural drip edge so water flows away from your window
- Internal steel reinforcement channel to ensure optimal performance and operation for larger windows.
- Mullion reinforcement pocket to facilitate structural reinforcement when combining large units.
PEACE OF MIND
- Heavy duty hinge for larger triple pane units
- Santoprene bulb seals improve sash/bulb contact area for a consistent seal and improved performance