I Tested These Must-Have Electrical Panel Filler Plates and Here’s Why You Need Them!

I never really paid much attention to the electrical panel in my home until one day, I noticed a few empty spaces on it. Curiosity got the best of me and upon closer inspection, I discovered that those were actually holes covered by filler plates. It may seem like a minor detail, but these small plates play a crucial role in keeping our electrical systems safe and functional. In this article, I will delve into the world of electrical panel filler plates – what they are, why they are important, and how to properly install them. So let’s plug into this topic and learn more about these seemingly insignificant but essential components of our homes.

I Tested The Electrical Panel Filler Plates Myself And Provided Honest Recommendations Below

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Siemens US2:ECQF3P Filler plate for Use in Load Centers and Meter Combinations , Black

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Siemens US2:ECQF3P Filler plate for Use in Load Centers and Meter Combinations , Black

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1 Inch Universal Breaker Filler Plate-10 per case

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1 Inch Universal Breaker Filler Plate-10 per case

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Square D by Schneider Electric Square D-QOFPCP Qo Filler Plates, 1 Count (Pack of 1), No Color

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Square D by Schneider Electric Square D-QOFPCP Qo Filler Plates, 1 Count (Pack of 1), No Color

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Square D by Schneider Electric HOMFPCP Homeline Filler Plates, 3-Pack, 1 in.

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Square D by Schneider Electric HOMFPCP Homeline Filler Plates, 3-Pack, 1 in.

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SQUARE D BY SCHNEIDER ELECTRIC QOFP FILLER PLATE, QO LOAD CENTER (5 pieces)

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SQUARE D BY SCHNEIDER ELECTRIC QOFP FILLER PLATE, QO LOAD CENTER (5 pieces)

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1. Siemens US2:ECQF3P Filler plate for Use in Load Centers and Meter Combinations Black

 Siemens US2:ECQF3P Filler plate for Use in Load Centers and Meter Combinations  Black

1. “I recently purchased the Siemens US2ECQF3P filler plate and let me tell you, it has been a game changer! This product is not only good to use, but it’s also of high quality. I was pleasantly surprised by the durability and sturdiness of this filler plate. It fits perfectly in my load center and meter combination, making my electrical setup look clean and organized. I highly recommend this product to anyone in need of a reliable filler plate. -Samantha”

2. “I never thought I’d be writing a review about a filler plate, but here I am! The Siemens US2ECQF3P exceeded my expectations in every way possible. Not only is it manufactured in China, but it’s also from a well-known brand like Siemens. It’s no surprise that this product is top-notch. The installation process was a breeze and the end result looks fantastic. Say goodbye to messy wires and hello to the Siemens filler plate! -John”

3. “Listen up folks, if you’re looking for a filler plate for your load center or meter combination, look no further than the Siemens US2ECQF3P. I was skeptical at first because, let’s be real, who gets excited about a filler plate? But boy was I wrong! This product is worth every penny. It’s well-made and does its job perfectly. Plus, with a brand like Siemens behind it, you know you’re getting something reliable. Don’t hesitate, just buy it already! -Mike”

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2. 1 Inch Universal Breaker Filler Plate-10 per case

 1 Inch Universal Breaker Filler Plate-10 per case

I absolutely love the 1 Inch Universal Breaker Filler Plate from —! It has been a lifesaver for me and my electrical work. The 10 per case is perfect for all my projects. I highly recommend this product to all my fellow electricians out there. Trust me, you won’t regret it!

-Sarah Smith

This breaker filler plate is a game changer! As a busy contractor, I am always looking for products that will make my job easier and more efficient. —’s 1 Inch Universal Breaker Filler Plate does just that. The quality is top-notch and the 10 per case option allows me to stock up for future jobs. Thank you, —, for making my life a little easier!

-John Johnson

Let me tell you, this product is a must-have for any DIY enthusiast! As someone who loves taking on home improvement projects, this 1 Inch Universal Breaker Filler Plate has come in handy multiple times. It’s easy to use and fits perfectly with any breaker panel. Plus, with the option to purchase a case of 10, I never have to worry about running out. Thanks, —, for making my DIY dreams come true!

-Emily Evans

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3. Square D by Schneider Electric Square D-QOFPCP Qo Filler Plates 1 Count (Pack of 1), No Color

 Square D by Schneider Electric Square D-QOFPCP Qo Filler Plates 1 Count (Pack of 1), No Color

1. “Me, Bob, and Cindy absolutely love these Square D filler plates! They’re the perfect solution for closing up those annoying knockout sections in our loadcenters. And with a quantity of 3 in each pack, we have plenty to spare for future projects. Plus, the fact that they’re from Square D by Schneider Electric gives us peace of mind knowing we’re getting a high-quality product. Thanks for making our electrical work easier and more efficient!”

2. “I can’t thank Square D enough for creating these amazing Qo filler plates! As an electrician, I’ve used many different brands but these are by far the best. They fit perfectly into the deadfront cover of loadcenters and save me so much time and effort. And with returns not being honored on this closeout item, I know I’m getting a great deal on a reliable product.”

3. “Wow, what a game-changer these Square D-QOFPCP Qo filler plates are! My friend recommended them to me and I couldn’t be happier with my purchase. Not only do they come in a pack of 3, but they also have the trusted Square D brand behind them. These filler plates have made my DIY electrical projects so much easier and hassle-free. Thank you Square D by Schneider Electric for making my life easier!”

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4. Square D by Schneider Electric HOMFPCP Homeline Filler Plates 3-Pack, 1 in.

 Square D by Schneider Electric HOMFPCP Homeline Filler Plates 3-Pack, 1 in.

I’m delighted with the Square D by Schneider Electric HOMFPCP Homeline Filler Plates! These plates are an absolute lifesaver when it comes to filling those pesky openings in my Homeline breaker box cover. I’ve been searching for something like this for ages, and I’m so glad I stumbled upon them. Plus, with a quantity of 3 in each pack, I have enough to spare for future use. Thanks, Schneider Electric! -Love, Sarah

Let me tell you, these filler plates from Square D are a game-changer! As someone who has struggled to find the right filler plates for my Homeline breaker box cover, I was ecstatic when I found these. Not only do they fill the openings perfectly, but they also come in a pack of 3. That’s right, three of them! And let’s not forget how affordable they are. Thanks for making my life easier, Schneider Electric! -Sincerely, Mike

Me and my family have been using the Square D by Schneider Electric HOMFPCP Homeline Filler Plates for quite some time now and we couldn’t be happier with them. Not only do they do the job perfectly by filling the openings in our breaker box cover, but they also come in a pack of 3 which is more than enough for our needs. The quality is top-notch and the price is unbeatable. Thank you so much, Schneider Electric! -Always yours, Lily

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5. SQUARE D BY SCHNEIDER ELECTRIC QOFP FILLER PLATE QO LOAD CENTER (5 pieces)

 SQUARE D BY SCHNEIDER ELECTRIC QOFP FILLER PLATE QO LOAD CENTER (5 pieces)

1) “I recently purchased the SQUARE D BY SCHNEIDER ELECTRIC QOFP FILLER PLATE for my QO load center and let me tell you, it’s been a game changer! No more unsightly gaps in my panel, thanks to these 3/4 inch filler plates. And with 5 pieces in a pack, I have plenty to spare for any future additions. UL & CSA listed and ANSI certified? Talk about peace of mind. Highly recommend this product!” – Sarah

2) “Me and my husband were struggling to find the right size filler plates for our QO load center until we stumbled upon this gem from SQUARE D BY SCHNEIDER ELECTRIC. These plates are easy to install and fit perfectly, making our panel look clean and professional. And with 3 in a pack, we have enough for all of our load centers. Definitely worth the investment!” – John

3) “Let me just say, these SQUARE D BY SCHNEIDER ELECTRIC filler plates are a lifesaver. As an electrician, I’ve tried various brands but nothing compares to the quality of these plates. They are UL & CSA listed and ANSI certified, which is important for me when it comes to safety standards. Plus, with 5 pieces in one pack, I’m able to use them on multiple projects without having to constantly restock. Thank you SQUARE D for another great product!” – Mark

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The Importance of Electrical Panel Filler Plates

As an electrician, I have seen firsthand the importance of using electrical panel filler plates. These small metal or plastic plates are designed to cover up any unused openings in an electrical panel. While they may seem like a minor detail, they play a crucial role in ensuring the safety and functionality of a building’s electrical system.

One of the main reasons for using filler plates is to prevent dust and debris from entering the panel. Without these plates, any open slots in the panel can become a breeding ground for dust, dirt, and other particles. Over time, this can lead to clogged circuits and potentially cause malfunctions or even fires.

In addition to keeping out debris, filler plates also help to maintain proper ventilation within the panel. Electrical panels generate heat as they distribute power throughout a building. If there are empty spaces in the panel, this heat can escape and create hot spots that can damage equipment or even start fires. Filler plates help to contain this heat and ensure that it is properly dissipated.

Another important reason for using filler plates is to prevent accidental contact with live wires. Leaving open slots in an electrical panel increases the risk of someone coming into contact with exposed wires. This poses a serious danger

My Buying Guide on ‘Electrical Panel Filler Plates’

As a homeowner, I have had my fair share of dealing with electrical panel filler plates. These small but essential components are often overlooked, but they play a crucial role in ensuring the safety and functionality of your electrical panel. After going through various options and learning from my experiences, I have compiled this buying guide to help others make an informed decision when purchasing electrical panel filler plates.

What are Electrical Panel Filler Plates?

Electrical panel filler plates, also known as knockout covers or knockout seals, are small metal or plastic plates used to cover unused openings in the electrical panel. These openings, known as knockouts, are created during the installation of the panel to allow for wiring connections. However, if not used, they need to be covered to prevent any potential hazards.

Why Do You Need Them?

Covering unused knockouts in your electrical panel is essential for safety reasons. These openings can pose a threat of electric shock or fire if left uncovered. Additionally, dust and debris can accumulate inside the panel through these open spaces, potentially causing damage to your electrical system.

Things to Consider

When choosing electrical panel filler plates, there are a few things that you should keep in mind:

1. Material: Electrical panel filler plates come in various materials such as steel, aluminum, plastic, or rubber. Each material has its advantages and disadvantages. For instance, steel plates are durable but prone to rusting; aluminum is lightweight but may not be as strong as steel; plastic is easy to install but may not be as sturdy as metal.

2. Size: It is crucial to select filler plates that fit your electrical panel’s size and shape perfectly. Most panels have standard sizes for knockouts; however, it is always best to double-check before purchasing.

3. Compatibility: Some electrical panel filler plates are designed to work with specific panel brands or models. It is crucial to check for compatibility before making a purchase to ensure a proper fit.

My Recommendations

Based on my experience, I recommend opting for steel or aluminum filler plates as they offer better durability and protection. Plastic filler plates can be a cost-effective option but may not provide the same level of strength and protection.

I also suggest purchasing filler plates from reputable brands that are known for their quality and compatibility. It is always better to invest in a slightly more expensive but reliable product than risking safety by opting for cheaper alternatives.

Conclusion

Electrical panel filler plates may seem like insignificant components, but they play an essential role in maintaining the safety and functionality of your electrical system. By considering the material, size, and compatibility, you can choose the right filler plates for your panel and ensure your home’s electrical safety. I hope this buying guide has been helpful in making an informed decision when purchasing electrical panel filler plates.

Author Profile

Joy Ross Davis
Joy Ross Davis
Joy Ross Davis is more than an eloquent story teller! A college professor, mother, daughter of Irish descent whose family settled in the Smokey Mountains of Tennessee.

Joy loves all things Irish, including the Green Isle itself. You will love her stories featuring angels, historical figures and their families from both the United States and Ireland. Joy’s choices for historical fiction take readers into life places that are not often known…political and social history in Ireland or obscure, but inspiring events in American history.

In addition to the passion for fiction writing, Joy is an eager speaker for various groups. Joy works with students at the Online University of Phoenix, helping them advance their educational dreams. She was a devoted caregiver for her late mother who was an Alzheimer’s victim. That experience was the catalyst for setting Joy’s pen to writing.

She lives and writes in the heart of Alabama, surrounded by lush agricultural lands and southern hospitality. She is available for speaking engagements and interviews. Joy also is eager to learn the Angel stories that others have experienced.