Superior Magnetic : The vent covers with a 500- magnetic force, so you can use these heater vent covers on your home ceilings, walls, and floors without the need for prediction. Energy Saving: Our vent covers prevent any cold air from entering your home and any warm air from escaping. If the weather uses our magnetic vent covers to decorate ceilings, floor vent covers or as heat register covers, you are sure to a good airtight seal. Cut to Size: All vents are not constructed the same, so we you can easily convert our heater vent covers into custom-sized vent blockers. Customize these AC vent cover ceilings to your specific needs for best performance and style. Reduce Noise: Experience quiet living with our noise-reducing A/C vent cover. These advanced covers, including duct vent covers and HVAC exhaust hoods, a peaceful atmosphere and are even suitable for vent hood ceiling installations. Elegant all-in-one: Discreetly upgrade your home with our magnetic vent covers. The design of our vent cover magnets ensures that your air conditioner vent cover blends seamlessly into your decor. Easily enhance your space with a click. Colour:White & Black Material:rubber Package Contents: 1set * ceiling covers 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.