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Cover Guard was tested to UL 263/ ASTM e-119 standard, -Inch Fire Tests of Building construction and materials-Inch
Cost Effective
Great for safe retrofit applications
Reduces sound transmission
Helps buildings meet fire rating standards
Product Description Metacaulk Cover Guard fits under the cover plate and does not take up volume in the electrical box. It is a labor saving replacement for putty pads in normal applications. STC 54 rating, Tested in a UL 411 wall assembly/section to ASTM E90. Patent Pending. From the Manufacturer Metacaulk Cover Guard fits under the cover plate and does not take up volume in the electrical box. It is a labor saving replacement for putty pads in normal applications. STC 54 rating, Tested in a UL 411 wall assembly/section to ASTM E90. Patent Pending.