Exposed Fastener
Wall & Roof Panels
The most affordable, easy-to-install metal panels for commercial, industrial, and agricultural buildings — shipped nationwide.
Fasteners pierce directly through the panel face and attach to the structure — the most cost-effective and widely used metal roofing and siding system available. 5 profiles: R-Panel/PBR, U-Panel, 5-V, Multi-Cor/PBC, and Mega Rib/7.2.
Calling is the fastest way to confirm pricing, availability, and lead time.
R-Panel · U-Panel · Multi-Cor · Mega Rib — 5 profiles available
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Our Exposed Fastener Panel Lineup
Five proven profiles — from the industry-standard R-Panel to the heavy-duty Mega Rib. All available in multiple gauges, coatings, and colors with nationwide delivery.
R-Panel / PBR
Roof & WallThe industry-standard exposed fastener panel. Features an optional purlin bearing leg (PBR) that rests directly on purlins for added structural support on roof applications. With 1¼" high ribs and 36" coverage width, it delivers superior spanning capability and load resistance across large roof and wall systems.
U-Panel / PBU
Roof & WallA low-profile metal panel with a soft, refined appearance — ideal as a liner panel, partition wall, or exterior cladding. Installed directly over purlins, the U-Panel can be run vertically or horizontally, giving you a wide range of design options. Perfect for storage facilities, garages, and commercial buildings.
5-V Panel
RoofAesthetically pleasing metal panels with a classic design. The "5-V" name refers to the panel's five distinctive "V"-shaped ribs that create a timeless coastal or farm-style appearance while efficiently channeling water off the roof. A proven choice for residential, agricultural, and light commercial applications.
Multi-Cor / PBC
Roof & WallA corrugated metal panel that combines classic style with structural strength. Multi-Cor's 7/8" ribs deliver the traditional corrugated look with a softer, refined texture — ideal for smaller structures, interior spaces, and horizontal wall accent applications. Lightweight and easy to install over solid deck or open framing.
Mega Rib / 7.2
Roof & WallVersatile and functional, the Mega Rib is a 7.2" rib-spacing exposed fastener panel that provides optimum strength and spanning capability. With bold 1½" deep ribs and 36" wide coverage, it delivers outstanding structural performance and a strong architectural appearance — ideal for large commercial and industrial buildings.
Quick Panel Comparison
Not sure which panel is right for your project? Use this table as a starting point — then call us for a recommendation.
| Panel | Application | Rib Height | Coverage | Min. Slope | Best For |
|---|---|---|---|---|---|
| R-Panel / PBR | Roof & Wall | 1¼" | 36" | 1:12 | Commercial, industrial, metal buildings |
| U-Panel / PBU | Roof & Wall | Low profile | 36" | 1:12 | Liner panels, garages, storage |
| 5-V Panel | Roof | 5 V-ribs | — | 3:12 | Residential, agricultural, coastal |
| Multi-Cor / PBC | Roof & Wall | 7/8" | 34.67" | 1:12 | Corrugated look, smaller structures |
| Mega Rib / 7.2 | Roof & Wall | 1½" | 36" | 1:12 | Large commercial & industrial spans |
Why Contractors Choose
American Structural Corporate
Same-day or next-day pricing · Multiple U.S. plants · Nationwide delivery · One contact from quote to delivery.
Nationwide Jobsite Delivery
Ship from the best-positioned manufacturing facility for your project location.
Fast Pricing
Same-day or next-day pricing when project details are provided.
Multiple U.S. Plants
Optimized lead times and freight lanes across all 50 states.
Colors, Gauges & Coatings
Wide selection of Kynar 500® PVDF, SMP, and Galvalume® finishes in many colors.
Contractor-Focused
Built for metal buildings, reroofing, additions, and agricultural projects.
One Point of Contact
From quote to delivery — clear, simple communication throughout.
Why Exposed Fastener Panels?
The go-to system for cost-conscious contractors who need proven performance, fast installation, and easy future maintenance.
Most Affordable Option
Lower material cost and faster installation compared to concealed fastener systems — the most cost-effective metal roofing and siding system available.
Easy to Install
Fasteners pierce directly through the panel face — straightforward installation over open framing or solid decking, reducing labor time and project cost.
Proven Durability
Galvalume® and Kynar 500® PVDF coatings provide long-lasting protection against corrosion, UV fading, and harsh weather conditions.
Wide Color Selection
Available in a broad palette of colors with Kynar 500® PVDF and SMP coating systems to match any project aesthetic.
Simple Maintenance
Individual fasteners are accessible and replaceable, making future repairs and re-roofing straightforward and cost-effective.
Any Application
From agricultural barns to commercial warehouses and industrial facilities — exposed fastener panels cover every building type and climate.
What Contractors Say
Contractors across the U.S. trust American Structural Corporate for panel supply, fast pricing, and reliable jobsite delivery.
"We sourced R-Panel for a large commercial warehouse project in Arizona. Pricing came back same day, the panels arrived cut to length and on time. No issues whatsoever — we'll be using them again."
"Needed 5-V panels for a coastal agricultural project in South Carolina. American Structural had Galvalume stock ready to ship faster than anyone else I contacted. Great service from start to finish."
"Ordered Mega Rib panels for an industrial facility in Ohio. One rep handled everything — quote, gauge selection, delivery coordination. The panels arrived exactly as spec'd. Highly recommend."