Combination Window


C-Sky provides combination windows for customers who want some ventilation in their large living room, dining room or even master bedrooms while keeping an opening without obstructing the view, as well as preventing potential break-ins. C-sky combines picture window with casement, single-hung, sliding, or awning window styles according to customers’ choice.

C-SKY combinations are the perfect choice for lasting beauty, durability, and energy efficiency.


  • Energy-efficient insulated glass reduces heating and cooling costs while keeping your home warm in the winter and cool in the summer
  • Durable multi-chamber designed fusion-welded frame for reliable structural performance and makes low maintenance cost
  • Smooth Control hardware system for easy opening
  • Special designed secure heavy-duty lock and keeper hardware
  • Folding crank handle lock is easily accessible and secure
  • Entire sash opens to provide full ventilation
  • High-performance charcoal fiberglass mesh screen keeps insects out while allowing more natural light inside
  • Inside removable sash for easy cleaning
  • Durable nylon rollers system makes sliding smooth
  • Dual weather stripping creates a weather-tight seal
  • Custom sizes available