Fusion-welded sash and mainframe

Virgin vinyl, multi-chambered sash and mainframe

Beveled exterior sash design

Low-profile, single handle, multi-point positive locking system

Multi-point locking system for added security

Step-down frame

Exterior fin/pile design weather seal

Compression-type inner bulb seal

Positive-action crank mechanism

Insulated glass unit with optimal air space for year-round performance

State-of-the-art hinge system

E-Gard corrosion resistant coating on the hinges