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

I was surprised to enter my new condo on the first real bitterly cold day this winter to find the place as frigid as if I had left a door open. I bought this sheet magnet, as others have, to cover my windy fireplace vents.It came in a tightly wrapped roll, covered in thick protective plastic. I unrolled it and let it rest near my baseboard radiator, held down at the four corners by the 4 legs of a table. It flattened nicely. I used a box cutter and sheetrock T-square to measure and cut 2 straight 7" x 36" sheets. This sheet was more than adequately sized for my purpose, and I have a large piece remaining. I left the white paper covering on. I had also purchased rare-earth magnets to support this sheet magnet, as many reviewers indicated that the magnet may not be strong enough to hold on a larger vertical surface. When I placed them on my fireplace vents, however, I found that the magnetism was more than strong enough to support the magnets vertically.I will retain the rare-earth magnets, however, as I plan to purchase and hem pieces of brocaded cloth to cover the sheet magnets so that they look attractive in my great room.I am very pleased to find such a simple and inexpensive fix.

I got this to cover ceiling vents in the cold months. It won't stick to the steel vents while hanging from the ceiling. I thought maybe it was just to heavy and gravity was the issue, but nope. It won't stick to steel vertically. It won't stick to steel horizontally either. Basically, it sticks to nothing. Worst. Magnet. Ever. I'd send it back if I hadn't cut it to the vent size, but that was the only way to see if it'd work. So save yourself the money to test it out and skip on this.

I bought this to use in our office to protect against an active shooter. Some of our doors have small windows (about 8" wide x 30" high) bordered by a metal frame. I cut the sheets to scale (to cover the whole frame, not just the window) and placed them onto the frame (if you have metal doors, you could simplty place them onto the door and leave the window free), allowing about 1/3 of the window to remain visible.Should the need arise, people can just quickly raise the sheet to cover the entire window, turn off the lights, and lock the door. From the outside, a person just sees black; combined with the window reflection, it just looks like the room is dark. When time is of the essence, as it is to an active shooter, it will hopefully mean that the room will be bypassed for one that is obviously occupied. Hopefully, this is something we never have to use. But even if we don't, this measure caused no permanent changes to the office. Also, if someone decides that they need removed for a special occasion, they come right off.

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.

Very poor magnet. I purchased it only to keep postcards but even they don't stay attached to the matt, they are falling to the floor.

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.

Didn’t stick to the vents, like always I leave the product time lapse so I couldn’t get a refund.

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.