1” Field-Lok™ panel with 1” high seam FLL is a non-structural single-locked or double-locked roof panel. FLL has passed industry performance tests in accordance with UL 580 Class 90. The panel system is installed with either a sliding or fixed clip.

It can be curved (FLX) with or without plank ribs for special accents, as well as over entrances and walkways. The minimum radius is 8'-0".

Contact ATAS for radius limitations.

Mechanical Seamer Rental Site

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.032 aluminum

24, 22* ga. metallic coated steel

24 ga. 55% Al/Zn alloy coated steel with acrylic coating
16, 20 oz. copper*
Panel Width:

13 1/2

17 1/2

21 3/4


Panel Length: Cut to customer specifications with a minimum 4’-0”, maximum to transportation limitations and/or product and project design considerations
Seam Height: 1"
Curve: Convex
Minimum Radius: 12'-0" (steel)
8'-0" (aluminum)
Texture: Smooth
Finish: KYNAR 500® PVDF or HYLAR 5000® PVDF
Colors: Choice of over 30 stock colors
Accessories: A complete line of trims available in matching colors, gauge and finish or as specified.
Minimum Slope: 2:12 depending on climate conditions

Optional sealant is available

*Subject to minimum quantities and lead time. Inquire for availability.


Field-Lok™ is a trademark of ATAS International, Inc.
Kynar 500® is a trademark of Arkema Inc.
Hylar 5000® is a trademark of Solvay Solexis, Inc.
Details provided allow for typical expansion and contraction values of the metal cladding materials as provided by ATAS International, Inc only. Allowance must be made for additional sub-structure movement based upon materials used and overall project design.

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Blueridge Community College

Feild-Lok Curved(FLX175), Silversmith

Durham Waste Water Treatment Plant

Field-Lok, Regal Blue

Cayuga Medical

Curved Field-Lok, Bone White

Private Residence, Dobbs Ferry, NY

Curved Field-Lok (FLL), Classic Bronze


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