Designed for street-level and low-rise applications in highly energy-efficient buildings, Therml=Block® TU14000 Series Storefront systems feature:• Thermally broken framing with dual-cavity poured-and-debridged (P&D) ultra-thermal barrier that improves thermal performance and helps prevent condensation• 2″ by 4-1/2″ aluminum framing profiles• Allowance for 1/4″ to 1-1/8″ exterior glazing or infill panels• Center-set, outside or inside flush-glazed• Screw-spline or shear-block constructionSave time in the field and reduce project labor costs with inside or outside glazing. Our system design is based on #12 screw fasteners to greatly decrease rework in the field. Extra-heavy intermediate verticals are available for high-performance wind load requirements.Our storefront framing also is compatible with our operable vents, and Tubelite Therml=Block Medium and Wide Stile Doors. Durable anodized and painted finishes provide long-lasting protection and color options.This high thermal performance storefront is ideal for retail, office, healthcare, education and other commercial buildings.