Rectorseal 66367 Metacaulk Box Guard 8 x 4 x 8 in Double Box Fire Rated Insert

Product Description

The Rectorseal Metacaulk Box Guard, MPN 66367, is designed as a fire-rated insert for double boxes. This product effectively seals electrical boxes against fire hazards. It expands when exposed to high temperatures, preventing fire spread. The installation is straightforward as it adheres to the back of the electrical box, making it suitable for retrofitting in existing installations.

• Fire rated for up to three hours.
• Non-conductive and safe for electrical applications.
• Meets NEC 314.16 compliance standards.

Product Highlights

The Metacaulk Box Guard offers a labor-saving solution for fire protection. It is tested for STC 53 rating in a UL 411 wall assembly ensuring reliability in firestop applications.

Product Information

Standard Information

• Color: Black
• Material: Intumescent

Technical Specifications

• Height: 3-3/4 inches
• Width: 1/4 inch
• Length: 3-11/16 inches
• Application: For electrical boxes
• Fire Rating: Up to 3 hours
• Specifications Met: ASTM E90, cULus Listed, UL 411
• Type: Double Box
• Dielectric Breakdown Voltage: 22V/mil (ASTM D 149)