Final answer:
Inlets to masonry chimneys should enter from the sides to support the efficient operation of appliances, such as wood stoves, and prevent heat escape. Mullions and bundled colonettes may decorate the chimney but don't influence the position of inlets.
Step-by-step explanation:
Inlets to masonry chimneys must enter from the sides and not from the top. This design better supports the efficient operation of wood stoves or other appliances by allowing them to prevent most of the heat from escaping through the chimney. The structural design of masonry chimneys often includes elements like mullions, which are slender, vertical forms that separate the windows, and sometimes bundled colonettes to give the masonry a more delicate appearance. However, these aesthetic elements do not affect the functional requirement for inlets to be on the sides.