Architectural Aluminum Flat Bars – Mill Finish 6063-T6 Alloy Profiles for Trim, Framing & Millwork
Our mill finish architectural aluminum flat bars are made from 6063-T6 Aluminum and can be used in various architectural applications. Designed for versatility, they are commonly used to finish millwork, trim, or to add protection for surfaces.
Product Description
About Architectural Aluminum Flat Bars
Our mill finish architectural aluminum flat bars are manufactured from premium 6063 T6 aluminum, a trusted alloy known for its strength, corrosion resistance, and ease of fabrication. Each bar is formed through a precise aluminum extrusion process that ensures smooth surfaces and consistent dimensions ideal for architectural and trim applications.
These mill finish architectural aluminum flat bars are designed for maximum versatility, making them a reliable choice for both residential and commercial projects. Commonly used to finish millwork, trim, and edge protection, aluminum flat bars provide long lasting durability while maintaining a clean, professional appearance.
Thanks to their excellent machinability, these aluminum flat bars can be easily cut, shaped, drilled, and welded to suit a wide variety of project needs, from framing to detailed millwork. Available in three widths (0.75″, 1″, and 1.5″) and three stock lengths (48″, 96″, and 192″), our aluminum flat bar profiles provide the flexibility to match your exact specifications. We also offer custom lengths up to 16 feet for larger applications.
Whether you are completing a detailed trim feature, fabricating architectural framing, or working on industrial construction, Monarch Metal’s aluminum flat bars deliver the strength, adaptability, and long term performance your project demands.
Key Features of Architectural Aluminum Flat Bars
- Material: 6063-T6 aluminum
- Finish: Mill Finish
- Widths Available: 0.75″, 1″, 1.5″
- Lengths Available: 48″, 96″, 192″ stock options
- Custom Lengths: Cut to size, up to 16 ft of aluminum flat bars
- Durability: Strong, lightweight, corrosion resistant
- Fabrication: Easy to cut, drill, weld, and shape
Architectural Aluminum Flat Bar Installation & Compatibility
- Ease of Use: Designed for simple cutting, drilling, and welding with standard tools
- Compatibility: Works in both residential and commercial applications
- Common Uses: Millwork finishing, architectural trim, edge and surface protection
- Adaptability: Suitable for detailed trim work and larger applications; custom lengths available
- Ordering: Stock sizes available for fast shipping; custom lengths up to 16 ft on request
Best Uses For Architectural Aluminum Flat Bars
- Trim and millwork finishing in both residential and commercial interiors
- Surface and edge protection in high-traffic or exposed areas
- Framing and support elements for light to moderate architectural build-outs
- Custom architectural detail work where precise profiles and clean finishes are required
- Applications requiring corrosion-resistant, lightweight, and easily fabricated metal profiles
Ordering & Custom Options For Architectural Aluminum Flat Bars
- Stock Flat Bars: Same/next business day shipping (online or phone)
- Custom lengths: Available upon request — Request a Quote
- Samples: Available for evaluation prior to purchase — Request a Sample
Frequently Asked Questions
An architectural aluminum flat bar is a rectangular aluminum profile produced through a precise extrusion process. The result is a smooth, consistent bar ideal for millwork, trim, framing, and surface protection applications.
Our flat bars are made from 6063-T6 aluminum, a trusted architectural alloy recognized for its strength, corrosion resistance, and ease of fabrication.
Architectural aluminum flat bars are frequently used for trim, millwork finishing, edge protection, and general framing in both residential and commercial projects.
Mill finish refers to aluminum that has not undergone any additional surface treatment after the extrusion process. It retains its natural appearance as it comes from the mill, which may include slight variations or marks from manufacturing. While mill finish aluminum offers good corrosion resistance and is suitable for many applications, it does not have the added protective layer or enhanced durability of anodized finishes.
Specifications & Downloads
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Material | 6063-T6 Aluminum |
| Finish | Mill |
| Custom Lengths Available | Up To 16 Feet |
| Width | 0.75 Inch, 1 Inch, 1.5 Inch |
| Length | 48 Inch, 96 Inch, 192 Inch |
| Availability | Same Day Shipping |
Photo Gallery
Mill Finish vs. Clear Anodized Aluminum
Choosing the right finish for your architectural aluminum angles depends on your application and desired appearance. Mill finish aluminum is raw and untreated, with a more natural, varied look. Clear anodized aluminum features a protective finish that provides a smoother, more consistent appearance along with added durability and corrosion resistance.


Architectural Aluminum Flat Bars Clear Anodized
Our clear anodized architectural aluminum flat bars are made from 6063-T6 Aluminum and can be used in various architectural applications. Designed for versatility, they are commonly used to finish millwork, trim, or to add protection for surfaces.










