Super Adsorption and Load-bearing Each clear suction Cup shelf is mainly loaded by 3 strong suction cups with a diameter of 2.48 inch. Holds up to 10 lbs. Adding a load-bearing leg can increase the load-bearing capacity by 2 lbs. Stable and SturdyThe window plant shelves are made of 5mm thick high-quality acrylic material, which reduces weight and wear-resistant, making it easier to install and clean. Tool-free installation, easy to assemble. Save Planting Space Window gardens shelves can allow plants to fully photosynthesize while saving you planting space. And indoor planting can prevent animals from damaging your plants. Wide ApplicabilityThe suction cup planter is suitable for all smooth surfaces, such as windows, mirrors, fish tanks. It can also be used as a shelf for bathroom mirrors or children's toys. NOTE: The uneven surface will reduce the adsorption force. Free Weight-Bearing LegsCompared with other suction cup organizers, we send 4 load-bearing legs with 2 Pack. We have good product service and maintenance. If you have any questions during the use of the product, please feel free to contact us.