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System 40 - 1 3/4" x 4 1/2" Storefront Framing

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Marlin storefront framing systems feature heavy wall (3/32") rugged aluminum extrusions. Appearance and durability make Marlin the ideal choice for storefront performance.

Unitized assembly saves fabrication and installation time. This screw spline method utilizes two piece snap together vertical mullions, so the storefront arrives assembled at the jobsite ready to install.

System 40 has 1 3/4" x 4 1/2" frame members that are flush glazed with 3/16" or 1/4" glazing. This system is primarily used for vestibules or interior applications.

System 40 offers door jambs, headers, and thresholds to accept any narrow, medium, or wide stile aluminum entrance package. Also available are 4 1/2" x 4 1/2" corner mullion, sill flashing and head compensation channel for header deflection.



Aluminum framing shall be Marlin System 40 as manufactured by Marlin Windows.


All supporting members shall be aluminum extrusions of 6063-T5 alloy & temper with a minimum wall thickness of .094". Glazing stops shall have a minimum wall thickness of .062".


Standard architectural Class II anodic color conforming to Aluminum Association AA-M12-C22-A34 for dark bronze or AA-M12-C22-A31 for clear anodize. (Architectural Class I and Class II anodic finishes and organic coatings available).


Aluminum framing shall have a 1 3/4" face width and a depth of 4 1/2". The vertical and horizontal members shall be joined by screw spline or through a shear clip attached to the vertical member.


System 40 shall be tested in accordance with AAMA 501 and meet the requirements of ASTM E 331 for water penetration, and ASTM E 330 for structural performance. Deflection of mullions shall be limited to L/175 when subjected to the project design pressure of ____ P.S.F. (Architect to specify)


System 40 shall accommodate 3/16" or 1/4" glazing.


Glass and framing shall be installed straight, plumb, and level without twisting and securely anchored in place. All joints between framing and the building exterior shall be sealed to provide a watertight installation.


The General Contractor shall provide adequate protection of the aluminum and glass surface from damage by grinding compound, lime, acids, cement or other contaminants. The General Contractor shall be responsible for final cleaning.

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