The Simpson OU48 Ornamental Joist Hanger 4x8 Black Powder Coated is a 7-gauge, face-mount hanger from Simpson engineered to connect a 4x8 joist to a header in ornamental and decorative framing assemblies. Its black powder-coat finish makes it a purpose-built solution for exposed architectural framing where a clean, finished appearance is just as important as structural reliability.

Key Features

• 7-Gauge Steel Construction - Heavy-duty steel gauge delivers robust load-carrying capacity suited to face-mount structural connections in demanding ornamental framing applications.
• Black Powder-Coat Finish - A refined, consistent black coating is purpose-designed for decorative and exposed framing assemblies where visible hardware needs to complement the overall aesthetic.
• Face-Mount Hanger Design - Attaches directly to the face of the header, providing a secure and precise connection point for a 4x8 joist without sacrificing visual appeal in open or architectural framing.
• Glulam Beam Compatibility - Approved for glulam beam applications, giving builders flexibility across a wider range of structural and decorative framing scenarios.
• Anchor Bolt Fastening - Engineered for installation with 3/4 in. diameter anchor bolts, ensuring a fastening method consistent with the hanger's structural purpose and ornamental application requirements.

Why This Product

• Form and function in one hanger - The black powder-coat finish is not an afterthought - it is purpose-designed for ornamental framing, meaning builders do not have to choose between a structurally capable hanger and one that looks right in exposed applications.
• Precision fit for 4x8 framing - With interior dimensions matched specifically to a 4x8 joist profile, this hanger eliminates guesswork and delivers a tight, accurate connection that keeps exposed framing lines clean and consistent.
• Heavy-gauge confidence where it counts - At 7-gauge, this hanger is built for face-mount connections that need to perform under real structural loads, making it a dependable choice for decorative framing that still has to meet engineering requirements.
• Versatility across beam types - Approved for glulam beam applications in addition to standard lumber, this hanger suits a broader range of architectural and structural projects without requiring a different product for each assembly.

Specifications

• Manufacturer Part Number (MPN): OU48
• Joist Size: 4x8
• Gauge: 7
• Width: 3-9/16 in.
• Height: 7 in.
• Coating / Finish: Black Powder Coating
• Hanger Type: Face-Mount
• Required Fasteners: 3/4 in. diameter anchor bolts (sold separately)
• Country of Origin: United States

Approved Applications

• Connecting a 4x8 joist to a header in ornamental and decorative framing assemblies
• Exposed architectural framing where a finished, decorative appearance is required
• Face-mount structural connections requiring a 7-gauge hanger profile
• Glulam beam applications - additional glulam beam widths are available; contact us for configurable options and special orders

Installation Notes

• Install with 3/4 in. diameter anchor bolts
• Additional glulam beam widths are available - for configurable options and special orders

Note: Product dimensions and/or bolt holes may differ from picture. Please see item description for specifications.

Frequently Asked Questions

What joist size is the OU48 designed to fit?

The OU48 is precisely sized to fit a standard 4x8 joist, with an interior width of 3-9/16 in. and a height of 7 in. to accommodate that lumber dimension.

What type of fasteners are required to install the OU48?

The OU48 is engineered for installation with 3/4 in. diameter anchor bolts, which provide a secure fastening method for the face-mount connection.

Is the OU48 suitable for exposed or decorative framing applications?

Yes. The OU48 features a black powder-coat finish that is purpose-designed for ornamental and decorative exposed framing where appearance is a priority alongside structural performance.

How heavy-duty is the steel used in the OU48?

The OU48 is constructed from 7-gauge steel, which is a heavy-duty gauge that provides robust load-carrying performance in face-mount hanger applications.