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A level space or area at a setback of an exterior wall of a building that is approximately the same

The marked reduction of the rate of heat release of a fire and the prevention of its regrowth by means

The closing of all concealed draft openings to form an effective fire barrier at floors, ceilings, and roofs by means

Any stone, such as sandstone, that is heat-resistant and therefore especially suitable for use in fireplaces.

A thermostat in an air-conditioning system; preset at a fixed temperature, usually 125°F (52°C) in accordance with code or insurance