Product Description
The Simpson WP3511.25-2 Welded Top-Flange Joist Hanger is built to deliver reliable joist support across a broad range of structural framing applications. Engineered by Simpson for double top-flange connections, this hanger accommodates wood-to-wood, wood-to-steel, and cold-formed steel assemblies, making it a versatile solution for contractors and builders who need consistent performance in skewed or sloped installations. Its welded construction and gray paint finish provide a durable, ready-to-install hanger suited for demanding framing conditions.
Key Features
- Welded top-flange design - provides a rigid, pre-formed connection point that reduces installation steps and helps maintain consistent alignment across framing members.
- Compatible with wood-to-wood, wood-to-steel, and cold-formed steel assemblies - gives builders the flexibility to use a single hanger model across multiple construction configurations without sourcing separate hardware.
- Supports skewed and sloped installations - allows the hanger to conform to angled framing conditions, reducing the need for custom fabrication on complex roof and floor framing layouts.
- Accepts double 2-5/16 in. x 11 1/4 in. joist sizing - precisely matches common engineered lumber dimensions, ensuring a proper fit without field modification.
- Simpson Strong-Tie Gray Paint finish - delivers a protective coating that is ready for standard interior framing environments right out of the box.
- Made in the United States - produced domestically, supporting consistent quality standards for structural connector hardware.
Why This Product
- Engineered for real-world framing complexity - the WP3511.25-2 supports skewed and sloped joist installations, meaning framers can tackle non-standard roof pitches and angled beam conditions without swapping to a different connector or cutting custom seats.
- Multi-substrate versatility in one connector - approved for wood-to-wood, wood-to-steel, and cold-formed steel applications, this hanger eliminates the need to stock separate products for different framing assemblies on the same job site.
- Sized for double engineered lumber - the double 2-5/16 in. x 11 1/4 in. joist capacity aligns directly with common I-joist and LVL dimensions, reducing guesswork and helping crews maintain schedule on production framing.
- Backed by the Simpson name - Simpson is a widely recognized brand in structural connectors, giving specifiers, inspectors, and builders a familiar product they can confidently call out in engineered plans and jobsite documentation.
Specifications
- Model Number: WP3511.25-2
- Brand: Simpson Strong-Tie
- Joist Size: Double 2-5/16 in. x 11-1/4 in.
- Description: Welded Top-Flange Joist Hanger
- Material - Stirrup: 97 mil (12 ga.)
- Finish: Simpson Strong-Tie Gray Paint; some models available hot-dip galvanized as a custom-made order
- Country of Origin: United States
Approved Applications
- Wood-to-wood joist and beam connections
- Wood-to-steel framing assemblies
- Cold-formed steel framing applications
- Joist support on purlins or beams requiring skewed or sloped installation
Options
- Contact us for Configurable Options and Special orders
- Refer to the Special-Order Worksheet for ease of ordering a Custom WP Hanger
Note: Product dimensions may differ from picture. Please see the item description above for specifications.
Frequently Asked Questions
What connection types is the WP3511.25-2 compatible with?
The WP3511.25-2 is designed for wood-to-wood, wood-to-steel, and cold-formed steel framing applications, making it one of the most versatile top-flange hangers in its class.
How much can this hanger be skewed and sloped?
This hanger can be skewed up to 84 deg. and sloped to a maximum of 45 deg., accommodating a wide variety of angled and pitched framing scenarios.
What gauge steel is used in the stirrup?
The stirrup is fabricated from 97 mil (12 ga.) steel, providing the structural strength required for joist support applications.
Is a hot-dip galvanized finish available?
The standard finish is Simpson Strong-Tie Gray Paint. Hot-dip galvanized finish is available on select models as a custom-made order option.
Reviews
FAQs
Standard Shipping is free on most orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
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