YKK AP has expanded its enerGfacade product line with the YCW 750 XT curtain wall system and YES 45 XT storefront system for the commercial building market (pictured here). The YCW 750 XT incorporates a dual-thermal barrier design to integrate 1-inch-thick insulating glass and advanced glazing technologies. It achieves a U-factor of 0.37 with 1-inch-thick glazing and U-factors as low as 0.17 with advanced glazing. The YES 45 XT system also includes a dual-thermal barrier design and features a U-factor of 0.36 using 1-inch-thick low-E glazing.