Yellow Marble Fireplace

? Fireplace must be designed to supply 100 percent of the combustion air from
outside the building with a direct connection to the firebox or combustion
chamber.
? Fireplace must have a permanently-sealed front, or tight fitting doors with a
gasket and a sealing latch or handle.
? Fireplace must be designed to operate in the closed position to minimize the
potential house air connection to the firebox.
? Fireplace must be direct-vent and/or have all joints in the chimney flue sealed
at time of installation.

Other:we also can production as per your drawing.