Triple Weatherstripping: The 4800 sash has triple weatherstripping as does the sash interlock providing for a very tight window.
Patented Jamb Design: Our "Candy Cane" jamb design allows a full jamb-to-jamb interlock and equal dimensional sashes with a clean traditional appearance.
Aluminum Reinforcement: Both sashes are reinforced with extruded aluminum stiffeners in the full perimeter of the sash. The sill is also reinforced with an aluminum stiffener.
Extruded Screen Frame: Our double hung utilizes an extruded screen frame with a standard reinforcing bar in the middle. The screen overlaps the window frame to provide a solid, bug free seal.
One Piece Sloped Sill: Our double hung utilizes a fully sloped, weepless sill design. This provides for excellent drainage and air infiltration performance. Plus there's no weeps to get plugged!
Hardware: Both sashes tilt in for cleaning and operate on our easy glide block and tackle balance system. Our color matched locking mechanism locks into the extruded aluminum stiffened upper sash for solid strength and security. Anti-spread pivot bars on the sashes and a unique installation strap make it difficult to spread the jambs during installation.
Frame: The 3-1/4" frame depth makes the 4800 ideal for new construction and retrofit applications. This unit's slimline beveled frame design gives it a stylish look inside and out. The 4800 double hung window is fully fusion welded extruded UPVC.
The 4800 double hung comes with 3/4” insulated clear or argon filled LoÉ3 high performance glass. Double LoÉ or laminate glass options are also available.