Type: Thermal 526C Sliding Window with 550 Fixed Transom
Color: Anodized Aluminum
Screen: Extruded Fiberglass Mesh Screen
Frame: Dual Thermal Break Technology
Hardware: Standard Hardware
Penthouse W4 Sliding Window with Transom - 68-1/2" x 70-1/2"
Low E is a transparent coating that keeps your home warmer in the winter and cooler in the summer. It also blocks ultraviolet rays which can be harmful to your skin, floors and furniture.