If you place them further up the wall you may find the draft inside the home to be excessive and there are better options to consider.
Vent in brick wall.
Brick vents are ideal for crawl space between floor or bath exhaust.
The surface area of the wall is approximately 1100 square feet while the total surface area of all the weep holes together is 18 square feet.
Air brick wall vents are designed to create an airflow underneath a suspended floor.
Model fl has a mounting flange for easy installation.
Weep holes in building exterior masonry walls brick or stone are a drainage system that is used in cavity wall or rain screen wall construction methods to get rid of water that has penetrated the outer wall skin or surface.
Air is pulled in through one side of the home and exits the opposite side.
These sturdy vents make an attractive accent through brick or block walls but are equally useful through any wall type.