The VB73A model's design is compatible with most manufacturers' volleyball systems. An integrated ratchet style clamp device attaches the platform to pole quickly and securely. The comfortable width platform adjusts in 1" increments from 47" to 53" height for officials and play at all net heights. The standard 1" thick player protection padding meets all NCAA, National High School Federation, USBA and FIVB rules. The platform transports on two floor friendly urethane wheels and rests on non-skid rubber floor pads when in use. The platform is sturdy enough to last you through the years with powder coated 1" heavy wall tube construction. Not recommended with Bison VB6000, VB2000T or VB6000T systems. Five-year limited warranty.