The BS-28 is a 18”(460mm) speaker stand for bookshelf/center-channel speakers up to 10kg/22 lbs. two solid aluminum pillars support a 200mm by 250mm glass top plate , and a built-in concealed wire path hides speaker cables for a clean and organized appearance in any room. The glass bottom plate is 250mm by 300mm with carpet spikes adding stability. Sand filling-in is available for additional weight adding for firm performance.