Type in any of the two values to calculate the third:
Width (inch): Height (inch):
Air Space (square inches) forChevron Louver OR High Air-Flow Louver
Note: Louver Inserts are 3/4" thick. CFM airflow is the rate at which a certain volume of air moves in a certain period of time. CFM stands for cubic feet per minute, and is commonly used to describe the capabilities of heating, ventilation and air conditioning systems.
I know that the website mentions having the opening 1” larger than the kits, but I wanted to verify that the additional 0.25” wouldn’t case any issues
The louver will shift and possibly expose the cutout and even with shims, you might not be satisfied with the finished project.
Custom sizes do cost more, but ordering the correct size is best practice.