Master MagneticsMagnetic Sign Holder Pack - Magnetic Sign Holders for Door Frames, Metal Shelves, Whiteboards - Powerful Magnet - Retail EZ Grip Holder - 3" L x 1" W x 1.13" H - 5-Pack

Good product, but needs some modification. These are very strong magnets in a sturdy metal frame. The plastic bracket is also strong & sturdy. The magnets hold on a flat surface or on a 90 degree slant. I've placed 1/8 thick sintra signs and the plastic holds them fine.The issue is that the plastic is held to the metal with two sided tape. The tape is good for about a week and then the two parts separate. The sign falls to the floor. This happened with a 11"x17" sign, very low weight. I've ordered more of these sign holders, but plan to crazy glue them together. I

They work great for 1 day. Day 2 - expect them to start falling down one by one nonstop (20 holders fell apart in a single day). Will also break the signs themselves, even those of good quality. Hazard for any environment /& workplace - may easily fall on anyone’s head injuring the person with its rough sides or sharp corners. Extremely poor quality of adhesive connecting plastic holder & magnet base. The two break apart into pieces.

Using on top of real estate signs for additional riders and they are strong and hold

Some of the holders were offset from the magnets and not all the holders were as tight as each other's.

Magnets are strong but it doesn't hold the sign. Sign slips out while hanging

We put up 25 of these a few days ago, and the double-stick tape has failed on 8 of them, so far. The magnets are VERY strong, so that makes it hard to take them back down to fix (and adjust positioning, for that matter.) We are going to try using glue to get the plastic piece to stay stuck to the metal piece. If that works... OTHERWISE, we like them.

I bought these to hang signage on pallet racking. I created the signs by laminating printed paper and was hoping to use these holders to keep them in place. The thickness of my laminated paper was not enough to securely fit into these holders, but that was easily fixed by adding a couple of labels (cut to the same size as the gripping portion of the holders). Works great! I've bumped the signs with forklifts and even smacked them walking by several times, and they're not going anywhere. Some of the other reviews mentioned weakness in the tape between the magnet and the gripping part, but mine are great so far. I'm very pleased with the purchase over all.

they are extremely cheaply made, the sticky part does not adhere to the back of the magnet. they are all over the place and are not staying up.