![Mouldings 101 | Bayer Built Woodworks](/Interior_Products/Moulding/MouldingDrawing_Holly_REV.jpg)
The type of moulding to be selected depends on where it will be installed:
Casing - goes around every door and window.
Base - goes around the bottom of the wall, where the floor and wall meet.
Crown - goes around the top of the wall, where the ceiling and the wall meet.