Do I Need a Louver?

Louvers are a critical component in keeping your home comfortable. But do you really need a louver, and how do you pair it with a grille? 

You need answers, and we’ve got them. Here’s what you need to know about the humble yet mighty louver. 


What Is a Louver? 

A gif showing how a louver opens and closes. 

Louvers are rectangular, box-like structures that lie beneath your register to control the flow of air. They open on the top or bottom with wide metal slats that can open vertically to let air flow through and into your room. To stop air from flowing, louvers can be controlled via a lever, wheel, or key to close flush against each other. 

Louvers play a critical role in keeping a room warm or cool. They’re also notorious for being difficult, struggling to open or close completely which leads to poor temperature control and uncomfortable loved ones. That’s not the case with louvers by Reggio Register. 

Our louvers: 


  • Open and close with a flathead screwdriver (no finicky levers or wheels) 
  • Efficiently control airflow  
  • Function for years at a time 


You now know what a louver is, but do you really need one? 


Do I Need a Louver? 

If you want better air and a more efficient home, then a louver is an absolute must. The primary benefit of installing a louver is more controlled airflow, and that comes with all sorts of benefits, including a: 


  • Reduced Risk of Health Hazards: Better air control means a decreased risk of mold and condensation accumulation. 
  • Better Household Temperature Control: The proper airflow makes it much easier to cool off in the summer or stay warm in the winter. 
  • Decreased Number of Pollutants: Common allergens like dust and pollen circulate out of your home much faster with better airflow. 
  • Greater Level of Energy Efficiency: More airflow control means less energy expended. 
  • Lower energy bill: Expending less energy will shrink your energy bill and give you more money to spend elsewhere. 


Cutting back on energy costs and improving your health is easier with a louver. Now that you know what a louver is and why it’s important, here’s how it goes with the rest of your register system. 


How Louvers Fit Within Your Register 

A diagram breaking down the various parts of a register.

A louver is paired together with a grille to make up your register area. Grilles are the external component of the register, while the louver goes underneath.  

Each of our grilles are available (sold separately) with louvers you can manually install to better control the airflow in your home. Before your louver installation, make sure you’ve got the right size. Watch our how-to videos on the proper measurement techniques. Once you’ve got the right sizes, allow 2 5/16” of space behind the grille for the louver. Our louvers come in a multitude of sizes to fit your vent correctly. 

Once your louver and grille arrive, you’ll notice that a foam strip has been included in the packaging. This foam strip wraps around your louver, giving it a tight tension fit and preventing it from rattling. Make sure you wrap your louver with this foam strip before you install it. 

When you're ready to install your louver, simply push it into the boot of the duct and place your grille over top. After the louver is firmly in place behind the grille, you’ll be able to open and close it via a screwdriver. In some cases, you may need to remove the grille to adjust the louver properly. 


If you want the best home possible, you can’t overlook the louver. Want to learn more about the parts behind your register? 

Register Terminology Explained

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