Metacaulk Box Guard Single 47 mm x 71 mm

Metacaulk Box Guard Single 47 mm x 71 mm Fire-Rated Electrical Box Insert Metacaulk Box Guard Single is a 1-component fire-rated insert designed for electrical boxes. It is installed on the inside back wall of electrical boxes to prevent the spread of flames and limit temperature rise on unexposed surfaces during fire exposure. This product is suitable for electrical distributors and switchgear suppliers seeking reliable firestop solutions compliant with NEC 314.16 and other applicable codes. Specifications Manufacturer: RectorSeal Manufacturer Part #: 66366 Dimensions: 47 mm x 71 mm x 6 mm (1-13/16" x 2-13/16" x 1/4") Product Weight: 3.34 lbs Dielectric Breakdown Voltage: 22 V/mil (ASTM D149) Sound Transmission Class (STC) Rating: 53 Color: Black Flame Spread Index: 5 (ASTM E84, UL 723) Smoke Index: 5 (ASTM E84, UL 723) VOC Content: Less than 1% or less than 10 g/L (TVOC, CDPH 01350 v1.2 standard) Solubility: Insoluble in water Fire Test Standards: UL 263 / ASTM E119 compliant Packaging: 50 units per case Features Highly intumescent firestop pad that expands to form a char seal during fire exposure Non-conductive material suitable for electrical applications Easy to install by hand, adheres to the inside back wall of steel electrical boxes Complies with NEC 314.16 and other applicable fire safety codes Classified by Underwriters Laboratories under Wall Opening Protective Materials Tested for fungal resistance with a rating of zero (ASTM G21) Stable and non-hazardous with no asbestos or solvents Suitable for use in fire-rated wall assemblies to maintain fire integrity Downloads & Links Safety Data Sheet Spec Sheet Certified Clean Air Gold Certificate SDS - Spanish