Listing is for a single JBL VT4887-SF Array Frame. There is only one available at this time. VT4887-SF (Short Frame) This array suspension frame is crafted in similar fashion to the VT4887- AF. The VT4887-SF is primarily intended for use with smaller clusters in tight spaces or distributed satellite arrays. Optional anchor for use on bottom of large arrays. Can also be used to groundstack up to 6 enclosures. Weight: 18 kg (40 lb).