Flexible Magnets 24x3 feet .30mil Super Strong Flexible Material by Flexible Magnets, White

This worked great to block off a vent in my ceiling. I had read some reviews stating it did not work for this purpose, so I was a little worried but decided to order and try it anyway. I measured the opening in my vent and cut a sheet the appropriate size. It was a little difficult sliding it in place, since it wants to stick to the metal. It works great! Even though there was a lot of air pressure coming out, it stays put. There are some types of ceiling vents that are not steel, perhaps that is the problem the other reviews had. I have both types in my office, I've included photos of each.

The roll received was no longer magnetic, if it ever was. I requested a refund and they didn't even want it sent back.

Used this to place on the back of my make-up and stick to a steel board. I had to use superglue to adhere it to the products and there is no adhesive surface. It handles a lot of weight as long as you use a larger piece. I had to fill the entire back of the product to have it hold, but it holds so well that they don't slip down or move even if you shake it or hit.

2 stars for delivery & quality. I waited so long for this product to arrive over two weeks. Being a prime member I had certain expectation that I would get it sooner regardless if it was vendor sold. The product did not meet my expectations. The magnet was weak & not strong enough to hold itself up 3ft x 1ft upside down. I had a wide open area to cover and it wouldn't magnetize itself to the edges of the sheet metal all the way around upside down. I had to cut it to size in order to make it fit not realizing that it was it strong enough of a magnet. I can't use it and I can't return it since I've already cut it. This was a waste of money.

Very fast shipping. I bought this for a intake vent that I wanted to block off and make the AC draw from a hotter area more. The grate is metal however this does not like to stick to it. The material is very durable, I would just need a little more magnetic strength to make it perfect.

Not a precise cut or size. More like a rough estimate and cut to be at least the 24x36 I ordered. I am using it in a poster frame for spices and needed to cut sheet to get clean (enough) edges and an exact 24x36 size. Backing was a BIG problem for me. It is stuck so hard to the magnet that it does not peal off easily. I gave up pleading all but a bit of the corners after ripping the magnet trying to peal off the back. The sheet is very flexible and therefore would be better if it could be stuck everywhere on a backer. But, using much care, I still ripped on conner off so I elected to adhere it to just small corners instead of the entire back. For my use, the ripped corner does not show. Your use may be different. Just beware that you can not simply peal and stick since pealing if very difficult and I don't know how you'd peal the entire 24x36 backer. The magnet is strong enough to hold spice tins but is not strong. If I were to do it again, I'd get the stronger one.

I have a fireplace with a glass door in a metal frame. The frame has a row of air vents along the top and bottom, which were letting cold air in the room when the fireplace wasn't in use. I ordered this magnet sheet to block it off since I figured it would be easily removable when we wanted to build a fire and just as easy to put back on. Reading the other reviews, I was worried that it might not work because of the weight of the sheet, but the outer frame of the door (approx. 2" wide around) seems to be adequate to hold it in place. I'm very satisfied with this solution. Very good price for this size of magnet material. It was shipped rolled up. To remove the curl-tendency after I unrolled it, I stuck it to the refrigerator for a few minutes.

Did not work at all on vertical wall metal air intake 27" x 18". I detected zero magnetic attraction. Another thicker magnetic sheet I was using had been working fine in that same location but it developed a crease during storage and split open a bit. I'm not sure how or where this could be used except possibly for floor vents to prevent it from sliding.

Magnum Magnetic NOT magnetic at all ! Waste off my money ...very disappointed 😞

The page says 24 x 3 feet, with a picture of a large roll and a hefty 64$ price tag, so I assumed it was 24 feet long. What I recieved is 2 x 3 feet, the size of a small poster ...

Absolute junk. Put them on my car and they flew off once I got on the highway. Definitely not strong enough for vehicles what a waste of money