YOW 350 XT High Performance, Thermally Broken Operable Window Outstanding Thermal Performance The YOW 350 XT maximizes energy performance while using a standard 1 " , low E insulating glass. This factory glazed window system has an overall depth of 3-1/2 " and is thermally broken by a combination of innovative MegaTherm® Thermal breaks and gaskets designed with multiple air chambers for exceptional thermal insulation. This innovative design improves occupant comfort and condensation resistance by warming interior framing temperatures significantly over traditional window systems used in cold climates. Product Options & Features n Up to 30% greater energy efficiency than traditional thermally broken windows and accepts a variety of glazing options, spacers and gas fills for even more efficiency n Fixed, Casement Out and Project Out options n AW-PG80 and PG100 approved designs n YKK AP Euro Style Multi-Point Lock Handle n Head / Jamb receptors and Sill Flashing n Panning, Trim and Accessories