Ameristar Impasse II
Ameristar Impasse II is a heavy-duty steel palisade security fence for utilities, federal and military sites, petrochemical plants and data centers.
About Ameristar Impasse II
Impasse II is a steel palisade fence built for high-security perimeters. It is offered with standard 3.25 in pale spacing or a 1.5 in anti-scale spacing that deters climbing, and optional expanded metal fillers add delay. Impasse II is SAFETY Act certified and designated by the U.S. Department of Homeland Security.
Panels come in 2-rail and 3-rail versions from 6 to 10 ft. Pales are 2.75 in wide 14 ga, rails are 2 x 2 in 11 ga, and I-beam posts are 3 x 2.75 in 12 ga or 4 x 2.75 in 11 ga. Styles are Gauntlet, Trident and Stronghold. The fence is designed to integrate with access control, detection and surveillance, and conduit and cabling can run within it. Ameristar offers a 15-year limited warranty on the powder-coated surface, and 3D installation instructions are available in the BILT app.
For a quote, send footage, height, rails, pale spacing, style, fillers and gates.

Colors, sizes and specifications
Colors and finishes
- Powder-coated framework (ask us for current colors)
Sizes and configurations
- Heights 6, 7, 8, 9, 10 ft
- Standard pale spacing 3.25 in; Anti-Scale 1.5 in
Models
- Gauntlet
- Trident
- Stronghold
Features
- Anti-Scale option with narrow pale spacing and optional expanded metal fillers
- SAFETY Act Certified and Designated by U.S. DHS
- Conduit, wiring and cable can run inside the fence, avoiding trenching and boring
Specifications
| Pales | 2.75 in wide, 14 ga |
|---|---|
| Rails | 2 x 2 in, 11 ga |
| I-beam posts | 3 x 2.75 in 12 ga; 4 x 2.75 in 11 ga |
| Panels | 2- and 3-rail with standard bottom rail |
Best for
- Power utility
- Federal and military
- Petrochemical
- Data centers
Installation notes
- 3D installation instructions available in the BILT app
Warranty
15-year limited warranty on the powder-coated surface of framework
Ameristar Impasse II photos
One product or the whole package
Order this on its own, with a few related products, or with everything else for the project. One itemized quote, shipped to all 50 states. Need someone to install it? Find an installer serving your area.
Request a quote for Ameristar Impasse II
Send plans, measurements, or photos and we will prepare an itemized quote. You can also call us with questions.



