Installed with an expansion clip, the 1 ½” Field-Lok™ panel is a non-structural single-locked or double-locked roof panel. The FLM series is mechanically seamed in the field and provides the traditional appearance of standing seam. Plank ribs are standard. The FLM series may also be curved with or without plank ribs. The minimum radius is 12'-0". Contact ATAS for radius limitations. Click here for info. on curved 1 ½” Field-Lok™ panels.

Mechanical Seamer Rental Site

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.032, .040 aluminum

24, 22* ga. metallic coated steel

24 ga. 55% Al-Zn alloy coated steel with acrylic coating
16, 20 oz. copper*
.7 mm zinc*
.0197 classic & terne coated stainless steel*
Panel Coverage:

12 1/2

16 1/2

20 3/4

Custom widths available

(Plank ribs standard, specify without)
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 1/2"
Available: Tapered, Convex
Texture: Smooth
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: 2:12 depending on climate conditions

Optional sealant is available

*Subject to minimum quantities and lead time

Inquire for availability
Panel width may vary



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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Dover Federal Credit Union, New Castle, DE

Field-Lok Curved(FLX125) & Field-Lok(FLM125), Teal

Millsboro Waste Water Treatment Plant, Millsboro, DE

Field-Lok(FLM165), Hartford Green

Private Residence, Bullville, NY

Field-Lok(FLM165), Coppertone

Slavin Center, Providence, RI

Field-Lok, Silversmith and ATA-Solar

Courtyard Marriott, Cheektowaga, NY

1 1/2" Field-Lok (FLM165), Charcoal Grey


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