Termination Cap or Chimney Cap:
The last piece of the top most part of a factory-built chimney pipe system, which serves the purpose of arresting sparks, keeping water out of the flue, and providing an outlet for cooling air on air-cooled chimney system.
Chase Cover (bottom pan):
A custom-made flashing that keeps water out of the chimney chase and home while providing an opening for the pipe termination.
Chase:
A pathway for a manufactured chimney pipe to pass through. Chases are commonly built on the home to resemble a traditional chimney, to provide lateral support for the chimney pipe, and keep the cold weather from cooling the flue.
Firestop / Firestop Spacer:
A manufactured component of a factory-built chimney that separates the fireplace enclosure from the attic areas and still allows proper heat clearances to adjacent combustibles. This slows the spread of fire through a home in the instance of a house fire and is required by building code.
Chimney:
The structure that passes through the construction of the home and encloses the flue (or flues).
Fireplace:
This is the firebox or place where you build the fire or place the gas logs.
Hearth:
The non-combustible floor area in front of the fireplace that is required for safety. NFPA code requires the outer hearth to extend 18″ from the fireplace opening.
Components of a Zero Clearance Chimney & Fireplace