Product Description
3M™ Fire Barrier Cast-In Device Height Adapter (SKU B40065431) extends the height of 3M™ Cast-In Firestop Devices to accommodate deeper concrete pours. It provides flexibility to adapt to various slab thicknesses without compromising firestopping performance or UL-tested ratings.
Key Benefits
- Height Adjustment: Allows Cast-In Devices to be extended for deeper concrete pours.
- UL Tested: Maintains tested and certified firestop performance after height extension.
- Simple Installation: Connects easily to standard 3M™ Cast-In Firestop Devices with no special tools.
- Labor Savings: Reduces need for custom sleeves or jobsite adjustments for varying slab depths.
Best For
- Cast-in firestop installations requiring deeper slab pours
- Commercial construction
- Hospitals and data centers
- Office buildings and multi-family residential
- Through-floor mechanical, plumbing, and electrical penetrations
- Projects using 3M™ Cast-In Firestop Devices
Product Properties
| Property | Specification |
|---|---|
| SKU | B40065431 |
| Product Type | Height Adapter for Cast-In Device |
| Compatible Devices | 3M™ Cast-In Fire Barrier Devices |
| Application | Height Extension for Concrete Pour |
| Construction | Plastic Extension Sleeve |
| Installation Method | Snap fit onto existing Cast-In Device |




