A: Hello Sarai and thank you for your interest in Moen products. One of the MOEN Sienna Glass Shelf in Black weighs 6.32 pounds; three MOEN Sienna Glass Shelves in Black would weigh 18.96 pounds. If you have additional questions, please complete the form at http://www.moen.com/consumer-support/contact-us or call Moen at 1-800-289-6636. Our business hours are 8:00 am – 8:00 pm Monday through Friday and 9:00 am – 5:30 pm on Saturday EST. We are here to provide support and ensure you will be satisfied with your Moen product.