Panel Mounted Wall Exhaust Fans

How Do I Choose the Right Size Panel Mounted Wall Exhaust Fan?

Selecting the correct fan size starts with calculating your space's ventilation requirements in CFM (Cubic Feet per Minute). To determine the minimum CFM needed, multiply your room's cubic footage (length × width × height) by the number of air changes per hour recommended for your application. Warehouses typically require 6 to 10 air changes per hour, while manufacturing facilities with heat-generating equipment or airborne contaminants may need 10 to 20. You can use our CFM calculator to estimate your specific airflow requirements. 

Once you have your target CFM, match it to a fan that meets or exceeds that rating. Panel mounted wall exhaust fans range from compact 12-inch models producing around 300 CFM to large 60-inch units capable of moving large volumes of air at over 70,000 CFM. Consider the static pressure in your building as well, since duct runs, filters, or wall shutters can reduce actual airflow. Our product listings include detailed performance curves so you can verify output at your specific operating conditions.

What Are the Installation Requirements for Wall Mounted Exhaust Fans?

Panel mounted wall exhaust fans are designed for straightforward installation directly into a wall opening. Each unit includes a mounting flange or panel that sits flush against the exterior wall surface, creating a clean seal and simplifying the cutout process. Most models require a properly sized rough opening, structural support for the fan's weight, and access to the appropriate electrical supply.

Electrical requirements vary by motor size. Smaller fans often operate on standard 120V single-phase power, while larger industrial units may require 240V or 480V three-phase connections. Always verify voltage, phase, and amperage specifications before installation to match your facility's electrical infrastructure. Adding gravity or motorized shutters to the exterior side of the fan helps prevent backdrafts and protects against weather infiltration when the unit is not running. These accessories are available separately and recommended for most exterior wall applications. For balanced ventilation, pairing an exhaust fan with a supply fan on an opposite wall can improve fresh air circulation throughout the space.

Are Panel Mounted Exhaust Fans Energy Efficient?

Energy efficiency in panel mounted wall exhaust fans depends on motor type, blade design, and proper sizing for your space. Direct drive motors, which connect the blade directly to the motor shaft, eliminate the energy losses associated with belts and pulleys. They also require less maintenance since there are no belts to replace or tension. Belt drive models offer flexibility in adjusting fan speed and offer quieter operation, but introduce periodic maintenance costs.

Oversizing a fan wastes electricity, while undersizing forces the motor to work harder and shortens its lifespan. Matching CFM output to your actual ventilation needs is the most practical way to control operating costs. Many facilities add variable frequency drives (VFDs) or speed controllers to adjust airflow based on real-time conditions, reducing energy consumption during lighter-demand periods. Look for motors with TEAO (Totally Enclosed Air Over) or TEFC (Totally Enclosed Fan Cooled) enclosures for improved durability and thermal protection in demanding environments.

Why Shop at Industrial Fans Direct for Panel Mounted Wall Exhaust Fans?

Industrial Fans Direct has spent more than two decades helping facility managers, contractors, and building owners find the right ventilation equipment for their projects. Beyond panel exhaust fans, we carry a full range of ventilation products including high velocity fans, air movers, and air curtains for temperature zoning and air cleaning applications. Our sales team works on a no-commission basis, which means you receive honest guidance focused on your actual needs rather than upselling. We partner directly with leading manufacturers to offer competitive pricing and maintain reliable inventory levels.

Our Low Price Guarantee backs every purchase, and our knowledgeable customer service team is available to answer technical questions, help with CFM calculations, or recommend accessories like shutters and speed controls. When you need dependable panel mounted wall exhaust fans and expert support from order to delivery, Industrial Fans Direct is the partner you can count on.