Thickness is 1.5mm, normal cover is 0.6mm, magnetic vent cover sticks tightly to floor/ceiling/wall vents, our cover is packed with super strong magnets and 't fall of [Universal Size]: 5.5 x 12 inches (approximately 14 x 30cm) (4 pack) The vent cover can exceed the size of most vents. Easily cut to any size to fit your vent and get better shielding. With durable yet construction, our magnetic covers are suitable for both residential and commercial use. They are made of high-quality materials that can withstand extreme temperatures ensuring long-lasting performance [Easy Installation]: Cut out the right size, then just magnet to the vent, (attach the white surface to the vent for more magnetism). Or tear off the white release paper and to the vent on a non-magnetic material [KEEP YOUR VENT CLEAN]: Prevents dust, pet hair and dirt from entering your vent, perfect for renovations and wanting to protect your vent. on cast iron or steel vents for a tight, sturdy grip. Not suitable for plastic or wood vents [Keep the Air ]Our car covers are also easy to clean and maintain, keeping your air vents free from dust and debris. Plus, they can help reduce energy costs by improving air flow and regulating temperature, making your heating and cooling systems more efficient. Color: white+black Material: rubber+PVC Package Contents: 4pcs magnetic vent covers for home Only the above package content, other 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.