Product Description
3M™ Fire Barrier Electrical Box Inserts are flexible, one-piece, pre-formed intumescent inserts used to provide firestop protection for electrical outlet boxes. When exposed to fire, the insert expands to fill the box space and seal off openings and penetrations, helping prevent the spread of fire and smoke.
Key Benefits
- Flexible Intumescent Insert: Designed for easy installation inside electrical outlet boxes.
- Effective Fire Protection: Helps protect electrical boxes by sealing voids and gaps during fire exposure.
- STC Rating: Achieves STC ratings of 47 when tested in 6″ steel studs with batt insulation.
- Compliance: Tested in accordance with ASTM E814, UL1479, and UL Category CLIV.
- Full Adhesive Backing: Allows for quick and simple installation without additional fasteners.
- Versatile Use: Ideal for both new construction and retrofit applications.
Best For
- Electrical outlet box protection
- Commercial construction
- New construction and retrofit projects
- Residential firestop protection
Product Properties
| Property | Specification |
|---|---|
| Application | Commercial Construction |
| Fire Rating | Up to 2 hours |
| Product Color | Red |
| Product Type | Electrical Box Insert |
| Water-Resistant | No |
| Overall Length (Imperial) | 2.25 in, 3.25 in |
| Overall Width (Imperial) | 2.25 in, 3.25 in |
| Overall Thickness | 0 in |
| Overall Thickness (Metric) | 4.762 mm |
| Overall Width (Metric) | 82.65 mm, 95.25 mm |
