The 2 3/8" Field-Lok™, FLS Series, standing seam panel features a Triple-Lok design that has been proven to outperform all roof systems in testing for wind uplift resistance. The Field-Lok™ incorporates a “hooked in” standing seam with a double-folded design to resist seam failure between supports, inhibit sidelap unfurling or unzipping, and add structural integrity to the roof system. Installed with expansion clips, Field-Lok™ accommodates for expansion and contraction of the roof system. The adjacent panel conceals the fasteners and clips. A power-driven mechanical seamer is used to interlock the panels at the site. Field-Lok™ has the flat pan/vertical rib profile preferred by architects for superior performance with traditional appearance. Because of its strength, watertightness and aesthetics, Field-Lok™ meets the new stringent building codes and specifications and is suitable for a wide range of climatic conditions. The extra-high locked standing seam adds structural integrity to the roof system.

Mechanical Seamer Rental Site

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FLS Seam Section 2-3/8" Line


.032, .040 aluminum
24, 22* ga. metallic coated steel       
24 ga. 55% Al-Zn alloy coated steel with acrylic coating
Panel Coverage:
13 3/4”
(Stiffening ribs standard, specify without ribs or with striations)
Panel Length:
Cut to customer specifications with a minimum of 4’-0”, maximum to transportation limitations and/or product and project design considerations
Seam Height:
2 3/8
Smooth, Embossed
Kynar 500® PVDF or Hylar 5000® PVDF
Choice of over 30 stock colors
Custom colors available*
A complete line of trims available in matching colors, gauge and finish or as specified
Minimum Slope:

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.

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Durham Waste Water Treatment Plant


Farmingdale Hay Barn, Melville, NY

Field-Lok(FLS137) & Multi-Purpose(MPN120), Patina Green

Bear Creek Hotel & Lodge, Macungie, PA

Field-Lok (FLS180), Galvalume Plus; Corrugated (BWC374), Brick Red, Galvalume Plus; Belvedere (BWG390), Brick Red; Design Wall (DWF120) Galvalume Plus; Multi-Purpose (MPV120), Dove Grey

Chautauqua School of Music, Chautauqua, NY

Field-Lok, Silversmith

New Hope Church, Henrietta, NY

Field-Lok (FLS180), Slate Grey; Corrugated (BWC374), Silversmith; Multi-Purpose (MPS120), Design Wall (DSF120), Silver

Sussex Technical High School, Georgetown, DE

Field-Lok (FLS180), Ascot White; Opaline (OPW085), Dove Grey; Corra-Lok (MFC160), Black; Multi-Purpose (MPS120), Ascot White

Nitschmann Middle School, Bethlehm, PA

2 3/8" Field-Lok, Charcoal Grey


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