BAW1179 Features: * Half dummy knob * Egg shaped knob * 1"" Square faceplate and full lip strike plate * Door thickness of 1.38"" - 1.75"" * Certified by Underwriters Laboratories (UL) for use on fire doors up to three-hour rating * U L10C / UBC 7-2 (1997) Positive Pressure Rated, UL10B Pressure Rated * cUL certified Construction: * Solid forged brass construction Dimensions: * Fits standard 2.13"" door prep * Dimensions: 2.5"" H x 2.5"" W x 2.49"" D