Designed for street-level and low-rise applications in energy-efficient buildings, Tubelite T14000 I/O Series Storefront systems feature:• Thermally broken framing with single-cavity poured-and-debridged (P&D) thermal barrier• 2″ by 4-1/2″ aluminum framing profiles• Allowance for 1/4″ to 1-1/8″ exterior glazing or infill panels• Multiplane options (Inboard and Outboard plane), Inside or Outside flush-glazed options• Screw-spline or shear-block constructionAchieving versatile designs, glass or infill panels can be positioned to the inboard (I) or outboard (O) side of the frame, or center set. Save 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.Our storefront framing also is compatible with our operable vents, sun shades, and standard or thermal Tubelite Narrow, Medium and Wide Stile Doors. Durable anodized and painted finishes provide long-lasting protection and color options.This thermal performance storefront is ideal for retail, office, healthcare, education and other commercial buildings.