Stalwart IS

Gauntlet Style
Gauntlet Style
Stronghold Style
Gauntlet Style with Privacy Slats
Trident Style
Gauntlet Style
Trident Style

Anti-Ram High Security Steel Fence

The Stalwart IS (Impasse Security) system integrates the strongest high security fence available with the most used anti-ram barrier. The Stalwart anti-crash barrier has been engineered and tested in compliance with current ASTM F2656-07 (Standard Test Method for Vehicle Crash Testing of Perimeter Barriers) and meets the demand for multiple vehicle threats. 


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Specification Quick Look

Pales: .2.75"w x 14ga

Rails: 2" x 2" x 11ga

I-Beam Posts: 3" x 2.75" x 12ga & 4" x 2.75" x 11ga

Heights: 6', 7', 8', 9' & 10'

Standard Pale Spacing: 3.25"

Anti-Scale Pale Spacing: 1.5"

Product Options

Crash Ratings

M50/P1 Tested M40/P2 Tested M30/P1 Tested
M30/P2 Engineered K4 Equivalent PU60/P2 Engineered PU50/P2 Engineered
K8 DOD Recognized K12 DOD Recognized


Fence Styles

Trident Stronghold Gauntlet


3 Rail Panels

  • Available in 6', 7', 8', 9' & 10' height
  • Standard bottom rail
  • 3.25" standard airspace

2 Rail Panels

  • Available in 6', 7', 8', 9' & 10' heights
  • Standard bottom rail
  • 3.25" standard airspace


Black Color Sample

 Bronze Color Sample

White Color Sample

Sand Color Sample

*Contact Ameristar for color samples

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Stalwart Anti-Ram Barrier Crash Test

Gate Recommendations

Swing Gates

Ameristar manufactures swing gate to match the height and picket style of the chosen fence system. Visit the Specs & Drawings page to download the matching swing gate drawings.

TransPort IS

The innovative TransPort IS cantilever gate system is made of three components: frame, facade, & hardware. Because of this simple and efficient design, the TransPort IS can easily be installed without the use of equipment or excess labor.

PassPort IS

PassPort IS is Ameristar's line of sliding roll gates that are ideal for projects that require a higher level of security.