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15 <br /> 3.3.3 HEARTH EXAMPLES <br /> FLUSH HEARTH EN <br /> MIN.1/4"(6.4mm) <br /> TILE OR MARBLE 20"MIN. <br /> (508mm) <br /> COMBUSTIBLE FLOOR <br /> MIN. 1"(25mm)CEMENT BOARD EMBER STRIP <br /> RAISED HEARTH <br /> 18"MIN. <br /> (457mm) <br /> 6" <br /> (152mm) <br /> COMBUSTIBLE FLOOR�► <br /> NON-COMBUSTIBLE MATERIALS EMBER STRIP <br /> SUCH AS CEMENT <br /> BLOCKS OR BRICKS <br /> RAISED APPLIANCE <br /> MIN. 1/4"(6.4mm) <br /> TILE OR MARBLE <br /> MIN. 1"(25mm) �_18"MIN. <br /> (457mm) <br /> CEMENT BOARD <br /> PLYWOOD <br /> yRAISED <br /> AINCREASE <br /> EMBER STRIP HEADER HEIGHT <br /> / APPLIANCE THIS DIMENSION <br /> < 4, COMBUSTIBLE FRAMING See"Framing"section <br /> RAISED HEARTH AND APPLIANCE <br /> MIN.1/4"(6.4mm) <br /> MARBLE OR STONE <br /> 18"MIN. <br /> NON-COMBUSTIBLE (457mm)—� <br /> MATERIALS SUCH - <br /> AS CEMENT BLOCKS RAISEDHEARTH <br /> OR BRICKS <br /> A� � <br /> A INCREASE <br /> PLYWOOD RAISED EMBER STRIP HEADER HEIGHT <br /> APPLIANCE THIS DIMENSION <br /> -4—+—COMBUSTIBLE FRAMING See"Framing"section <br /> W415-1642/04.15.16 <br />