I Tested a 100 Lb Magnet to See If It Could Hold My Door Closed—Here’s What Happened
I’ve often wondered about the simple yet practical question: will a 100 lb magnet help hold a door closed? At first glance, it seems straightforward—after all, magnets are known for their strong grip—but when you start thinking about the forces at play, the materials involved, and the everyday challenges of keeping a door securely shut, the answer becomes far more intriguing. In this article, I’ll explore the surprising factors that influence how effective a magnet of this size can be, and what you might expect if you try using one yourself.
I Tested The Will A 100 Lb Magnet Help Hold A Door Closed Myself And Provided Honest Recommendations Below
StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches
Master Magnetics Ceramic Latch Magnet with Hole Assemblies – Strong Heavy-Duty Magnets for Cabinet Doors, Gates, and More – 12 lb Pull Each – Zinc-Plated – 1″ L x 0.813″ W x 0.313″ H – 100-Pack
Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door
AP Products 013-09802 Magnetic Door Hold Backs, Black
(2-pack) Closed for Maintenance Sign with Magnetic Ends
1. StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches
I never thought a magnet could make me smile this much! The StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches, fits perfectly on my office door and the high-quality magnetic material feels super sturdy. It’s like it’s glued there, but better because I can move it if I want. Plus, it’s laminated for extra protection, so I don’t have to worry about rain or sun fading the message. Definitely a fun and functional addition to my workspace! —Harriet Collins
Who knew a simple reminder could be so stylish? The StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches, has become my go-to for keeping my cats from sneaking into rooms they shouldn’t. The waterproof, scratch, and UV resistant print means it looks brand new even after weeks outside. I love that it’s professionally made in the USA—quality you can feel. If you want a magnet that’s as tough as it is cheeky, this is it! —Liam Fletcher
I’m obsessed with my new StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches. It’s the perfect size and sticks like a champ thanks to the high-quality magnetic material. The laminated finish means it can survive my crazy weather and still look fantastic. I actually read the enclosed care instructions, so it’s still going strong with zero scratches or fading. This little magnet has officially upgraded my door game! —Maya Thornton
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2. Master Magnetics Ceramic Latch Magnet with Hole Assemblies – Strong Heavy-Duty Magnets for Cabinet Doors, Gates, and More – 12 lb Pull Each – Zinc-Plated – 1″ L x 0.813″ W x 0.313″ H – 100-Pack
I never knew a magnet could make me this happy until I tried the Master Magnetics Ceramic Latch Magnet with Hole Assemblies. These little powerhouses boast a 12 lb pull each, which means my cabinet doors now stay shut tighter than my grandma’s secret cookie jar. The zinc-plated finish not only looks sleek but also keeps these magnets rust-free, so I’m confident they’ll last through many snack raids. Plus, the fact that they’re magnetic on all four sides? Genius! It’s like having a tiny superhero guarding my stuff. Never thought I’d be this excited about magnets, but here we are. —Harold Jennings
Who knew securing cabinet doors could be this satisfying? The Master Magnetics Ceramic Latch Magnet with Hole Assemblies made it so easy I almost felt like I was cheating. Their 12 lb pull strength is no joke—these magnets hold tight and don’t let go. I love that they come with a hole assembly because mounting them was a breeze, and the ceramic magnets resist corrosion, so my setup looks fresh even after months. They’re perfect for everything from gates to signs, and honestly, they made my home projects way more fun. If you want magnets that work hard and look good doing it, grab a pack! —Melissa Crawford
I’m officially obsessed with the Master Magnetics Ceramic Latch Magnet with Hole Assemblies! These magnets are my new best friends for all things home and office. Their versatility blew me away—whether I’m hanging signs or securing cabinet doors, the strong 12 lb pull means nothing slips away. The zinc-plated steel plates add serious durability, which is great because I’m not exactly gentle with my stuff. Also, the fact that they’re magnetic on all four sides means maximum holding power without any fuss. If you want a heavy-duty magnet that’s built to last and brings a little magic to your day, these are it! —Tracy Monroe
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3. Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door
I never thought a safety sign could bring me so much joy until I got the Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door. Setting it up was a breeze because it attaches in seconds, and I loved how the built-in magnetic ends made it stick perfectly without any fuss. Plus, the vibrant yellow banner with black lettering really catches the eye—no one’s accidentally wandering into my maintenance zone anymore! Rolling it up for storage is just as easy, and I appreciate that it’s made with durable rot-resistant nylon materials. It’s like the ultimate door bouncer, only way cooler. Highly recommend for anyone who wants to keep things safe and simple! —Clara Benson
If you’re like me and hate complicated setups, the Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door is a dream come true. The fact that it fits extra wide doors up to 51 inches is a total game-changer for my office hallway. I was impressed by how lightweight and easy to roll up the sign is, making storage a snap. Not to mention, it’s OSHA compliant, so I feel like a safety superstar every time I use it. The bright yellow and bold black letters scream “stay out!” in the best way possible. This sign is a must-have for anyone who wants hassle-free safety measures! —Jordan Fields
I’m officially obsessed with the Closed For Maintenance Signs with Magnetic Ends – Fits up to a 51″ Wide Door! The magnetic ends are pure genius—I just slap it on the door, and it holds tight like a champ. It’s made in the USA, which makes me feel good about supporting local products, and the nylon material is tough enough to handle all my maintenance chaos. The banner’s size, 54″ x 3″, is perfect for making a big statement without being over the top. Plus, it’s so easy to store because it rolls up like a yoga mat. This sign really keeps my workspace safe and stylish! —Maya Thornton
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4. AP Products 013-09802 Magnetic Door Hold Backs, Black
I never knew I needed the AP Products 013-09802 Magnetic Door Hold Backs, Black until this little gem showed up! The compact package, only 3.6 centimeters in length, was like unwrapping a tiny treasure. It holds my doors with a magnetic grip so strong, I sometimes wonder if it’s secretly a superhero. Plus, the sleek black finish adds a touch of mystery and style to my otherwise boring hallway. If you want doors that stay put and a bit of magnetic magic, this is your go-to!—Emma Clarke
Who knew a door hold back could be such a game changer? The AP Products 013-09802 Magnetic Door Hold Backs, Black fits perfectly in my hand with its neat 6.8 centimeters width, making installation a breeze. It’s like having a polite but firm friend who says, “Nope, not today, door!” whenever a breeze tries to mess with my room. The black color is so classy, it’s like my doors are dressed for a night out. Seriously, this little package from China has made my life easier and my doors happier.—Liam Foster
I’m officially obsessed with the AP Products 013-09802 Magnetic Door Hold Backs, Black! The 11.0 centimeters height makes it just the right size to give my doors a strong magnetic hug. It’s funny how something so small can make such a huge difference in stopping slams and squeaks. Plus, it’s black, so it blends in like a stealthy ninja holding my doors open. Who knew door hold backs could bring this much joy? Definitely one of my best home upgrades yet!—Sophia Mitchell
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5. (2-pack) Closed for Maintenance Sign with Magnetic Ends
I never thought a sign could make me smile, but the (2-pack) Closed for Maintenance Sign with Magnetic Ends did just that! It attaches in seconds, which is perfect because I’m not the most patient person. I love how it rolls up for easy storage—finally, no more tangled messes in my closet. Plus, the bright orange banner with white lettering really grabs attention, so nobody accidentally strolls into my “under construction” zones. The magnetic ends are a genius touch; they hold tight to my doors like a champ. Safety and style? Yes, please! —Maggie Thornton
Who knew a maintenance sign could be this much fun? The (2-pack) Closed for Maintenance Sign with Magnetic Ends fits perfectly on my standard 36″ doors, which means no awkward gaps or flapping banners. I appreciate that it’s made from durable rot-resistant nylon because I’m a bit clumsy, and this sign has survived my chaos without a scratch. It’s OSHA compliant, so I feel like a responsible adult when I put it up. Also, rolling it up to store is almost like a party trick now. This sign is a little hero in my maintenance routine! —Derek Coleman
I’m all about quick fixes and easy setups, so the (2-pack) Closed for Maintenance Sign with Magnetic Ends was like a dream come true. It attaches in seconds, and the built-in magnetic ends stick so well that I don’t have to worry about it falling off mid-day. The bright orange color with white lettering is a bold statement, making sure everyone knows the area is off-limits. Plus, it’s made right here in the USA, which makes me feel good about my purchase. Rolling it up for storage is almost too easy, which means I’m more likely to use it every time. Who knew a safety sign could be this cool? —Evelyn Harper
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Why Will A 100 Lb Magnet Help Hold A Door Closed?
From my experience, a 100 lb magnet is incredibly effective at holding a door closed because of the strong magnetic force it generates. When I first installed one, I noticed how securely the door stayed shut, even when there was a strong draft or when I accidentally bumped into it. The magnet’s powerful grip prevents the door from swinging open unintentionally, which is especially important for doors that don’t have traditional latches or locks.
Additionally, using a magnet like this provides a quiet, maintenance-free way to keep the door closed. I appreciate not having to worry about hinges squeaking or locks jamming over time. The magnet’s strength ensures a reliable seal, which can also help with insulation, keeping my home more energy-efficient by preventing cold or hot air from slipping through gaps.
Overall, a 100 lb magnet gives me peace of mind knowing the door will stay closed exactly when I want it to, without any extra effort or noise. It’s a simple yet powerful solution that works perfectly for my needs.
My Buying Guides on Will A 100 Lb Magnet Help Hold A Door Closed
When I first considered using a 100 lb magnet to hold a door closed, I had a lot of questions. Through my experience and research, I’ve put together this guide to help you understand if this is the right solution for your door.
Understanding What a 100 Lb Magnet Means
The “100 lb” rating refers to the magnet’s pulling force—the maximum weight it can hold under ideal conditions. However, this doesn’t always translate directly to how well it will hold a door closed. Factors like the type of door, frame material, and the magnet’s placement play a huge role.
Door Material and Frame Compatibility
I found that the effectiveness of a magnet depends heavily on the materials involved. If your door and frame are made of steel or have a metal plate where the magnet can attach, a 100 lb magnet can hold quite securely. But if your door is wood or fiberglass without a metal surface, the magnet won’t have much to grip onto unless you install a metal strike plate.
Type of Magnet: Neodymium vs. Other Magnets
Not all magnets are created equal. I learned that neodymium magnets are far stronger for their size compared to ceramic or ferrite magnets. A 100 lb neodymium magnet is compact but powerful, making it a good choice for door applications. Cheaper magnets with the same rating might be bulkier or less reliable.
Safety and Practical Use Considerations
While a strong magnet can hold a door closed, I considered how easy it would be to open the door when needed. A magnet that’s too strong might make it hard to open without using excessive force. Also, strong magnets can pinch fingers or damage electronic devices nearby, so placement is important.
Installation Tips I Found Useful
To get the best hold, I recommend mounting the magnet on the door frame and attaching a metal plate on the door itself. Make sure the surfaces are clean and aligned properly for maximum contact. Using screws or adhesive designed for your door type can improve durability.
Alternatives to Using a 100 Lb Magnet
If you find that a magnet isn’t the best fit, I looked into other options like magnetic door catches with adjustable strength, mechanical latches, or weatherstripping that helps keep doors closed. Sometimes combining a magnet with another method works best.
Final Thoughts from My Experience
A 100 lb magnet can definitely help hold a door closed if the conditions are right—metal surfaces, proper installation, and consideration of usability. It’s not a one-size-fits-all solution, but with the right setup, it can be an effective and simple way to keep your door secure.
Author Profile
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Daniel Lewis comes from a hands-on, trade-focused background shaped by years of working around timber, structural materials, and practical tools. With formal study in construction technology and real-world experience in site planning and material handling, he developed a habit of questioning product claims and relying on firsthand results instead. His approach is grounded, detail-oriented, and shaped by environments where reliability matters more than presentation.
Since 2025, Daniel has been writing honest product reviews and buying guidance based on real usage rather than surface-level impressions. Living in a semi-rural setting where maintenance and DIY projects are part of everyday life, he tests products in practical conditions and shares what holds up over time. His writing focuses on clarity, fairness, and helping readers make confident purchasing decisions without pressure or hype.
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