Now you have to take the exact "facing" direction of your maindoor, means standing inside looking out. As mentioned in an earlier article, all directions are related with certain elements. The purpose is to strengthen the reigning element or use the supporting element to enhance:
If your door faces West, North-West or North use a metal bell, as Metal is the element of W and NW and the supporting element for N. Don't use metal bells for the East or South-East as they belong to the element Wood and Metal will cut Wood. In this case ceramic or crystal bells (which represents the Earth) will be the choice as the Earth element support the growth of Wood. Same goes for the South, South-West and North-East as they all are related with the element Earth itself and something out of an earth component will strengthen and harmonize it it.

All good fortune being attracted towards your door wishes you

Karina S.V.