Super Magnetic: What's the point of a magnetic vent cover if it falls off every two seconds? Whether it's a weak magnet or a rigid profile, or the vents are spray-painted - some covers 't want to stick. suitable for ceiling vents, walls and floors. can be easily cut to fit your exhaust vent. No need to worry that the predetermined size lid may not even fit We use PET materials to produce more environmentally friendly products. Rounded corners are die-cut to prevent puncture wounds and easier to use. The magnetic vent cover has an extra protective film, which can make the product surface whiter and more beautiful. If you use it on the vent, you don't need to worry about exhaust dust falling in, and you can also adjust the ventilation volume of the room. The magnetic vent cover is made of super strong magnetic material, with a magnetism of 600 Gauss. No matter the amount of air, it will not affect the use of the vent cover and that it will not fall off. size: 20 x 39 x 1.5cm Material: PVC+rubber colour: White Package Contents: 2 x Magnetic Vent Cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.