Made in the USA NOMMA
1.800.331.2590
36 West Pennsylvania Avenue Walkersville, MD 21793

Custom Fabricated Louvers by Hercules Custom Iron, LLC.

Making the Most of Louver Free Space on Your Property

Making the Most of Louver Free Space on Your Property

Understanding how louver free space impacts performance can help improve ventilation, efficiency, and overall system function.

Achieving the right balance between efficient airflow and energy use is essential for a well-performing HVAC and exhaust system, and custom louvers play a key role in making that possible. While louvers are a critical component of modern buildings, their effectiveness depends largely on proper design and installation. Understanding how louver free space impacts performance can help improve ventilation, efficiency, and overall system function. Read on to learn how optimizing free space with your property’s louvers can make a meaningful difference.

What is Free Space and How Do Your Louvers Affect It?

The free space is known as the minimum space through which air could pass through the louver. It’s essentially the total opening spot that is unblocked by frames and blades. Typically, high free are refers to enhanced and better airflow, but it also allows for better penetration of debris and rainwater.

Figuring Out Your Free Space

Free space is calculated by measuring the total unobstructed open area of a louver, excluding blades, frames, and other components, and dividing it by the overall wall opening. This percentage allows you to compare how much airflow the louver provides relative to the wall opening size. In most cases, free space ranges from about 35% to 60% of the opening. Higher free space generally allows greater airflow through smaller openings, which can help improve efficiency and reduce operating costs. However, increased airflow must be carefully balanced with protection against water intrusion. A well-engineered louver system is designed to optimize free space while limiting water penetration for reliable performance.

How Other Louver Factors Can Affect the Free Space Performance

It’s important to understand that louver free space varies based on size, shape, screens, and specific louver models. Each of these factors can truly influence overall airflow, so they should all be carefully evaluated when selecting louvers for your property. For example, a louver that measures four feet wide by eight feet tall may not offer the same free area as one that is eight feet wide by four feet tall, even though the total opening size appears similar. Blade design and spacing also differ from model to model, directly affecting the amount of free space available. If you’d like to better understand louver free area before installation, the team at Hercules Custom Louvers would be happy to help guide you through your options.

QUALITY LOUVERS FROM HERCULES CUSTOM LOUVERS

When you are ready for quality louvers, the professionals at Hercules Custom Louvers are ready to help. For more information and to learn how we can meet your custom louver needs, contact Hercules Custom Louvers online or giving us a call at 1-800-331-2590. We will ensure your investment serves your property for years to come! For updates and to see projects we’re working on, visit us on Facebook, Twitter, Twitter, YouTube, and Pinterest.

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Hercules Louvers
36 West Pennsylvania Avenue Walkersville, MD 21793
Phone: 1.800.331.2590