Standard R-Core® polyurethane-filled mainframes (and optional sash) for improved thermal properties. Optional Hi R+Plus® and Maxuus™ glass systems enhance thermal performance and lower your utility costs. Windows featuring our Hi R+Plus® and Maxuus™ glass options earn the ENERGY STAR by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. Heavy-duty weatherstripping for one of the lowest air filtration rates in the industry.

Stylish frame and glazing bead provide functional beauty. Full 7/8" Warm-edge Intercept® insulated glass is standard on most products for greater comfort and strength.

Color-matched locking and operating hardware combines easy operation, high security and functional beauty. Single-lever, multi-point locking mechanishm. Interior glazing bead deters glass removal from outside the home and provides a waterproof seal to protect insulating glass.

E-Gard™ hardware allows full opening for safe, easy cleaning. Screens are removable from inside the home. New Generation Vinyl never requires painting, caulking or maintenance. Optional Advanced Easy Clean® Glass needs cleanig half as often and with half the effort as ordinary window glass.