A noncombustible receptacle shall be placed below each floor opening into the
air chamber, and such receptacle shall comply with Section
607.8.1 through Section 607.8.3.
The receptacle shall be securely
suspended from the floor members and shall be not more
than 18 inches (457 mm) below the floor opening.
The area of the receptacle shall extend 3
inches (76 mm) beyond the opening on all sides.
The perimeter of the receptacle shall
have a vertical lip not less than 1 inch (25.4 mm) high at
the open sides where it is at the level of the bottom of the
joists, or 3 inches (76 mm) high where the receptacle is
suspended.