United States Aluminum: Window Wall: Series TT451 Top Notch Systems

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Series TT451 Top Notch Systems

The Top Notch Systems offer a shallow face reveal that creates a flush exterior appearance. These Systems are designed for labor saving stacking type installations that requires glazing from the interior. Series TT451 utilizes top load gaskets, and offers improved thermal performance using the Poly-Aluminizer™. Internal water deflectors at intermediate horizontal to vertical intersections allow infiltrated water to be drained into a continuous sill gutter and weeped to the exterior. Vertical mullions for structural silicone glazing are also available. The Top Notch systems are designed for fixed horizontal ribbon window or punched opening applications.

• 2 1/4" (57.2) x 4-1/2" (114.3) Frame
• 1" Glazing
• Glass offset to front
• Butt glazed vertical option
• Continuous head & sill
• Screw race joinery
• Available in an array of architectural coatings and anodized finishes