From a Feng Shui perspective, is it better to have a large door or a small door in a commercial building?

The door should match the house and be proportional in size. It is most taboo to have a door in a small house because Feng Shui pays attention to the Qi. The entrance door is the air inlet of the house. If the house is small, there is not enough space for Qi gathering and the door is too big. If so, the residents will be greatly affected and their health will be affected.

On the contrary, if a large house is equipped with a small door, the Qi will be insufficient, which will be detrimental to wealth.

Hope it helps.