The model SATYR4 crash rated beam is ASTM F2656 07 M30 P1 certified (equivalent to US Department of State K4; 15,000lbs, 30mph, less than 1m penetration). The SATYR 4 standard assembly consists of a receiver stanchion, hinge stanchion, aluminum arm, stanchion covers, and operator. The system is designed for smooth operation, low maintenance, and long life. The SATYR 4 is available with clear opening widths from 10 to 25 feet and can be operated manually with a counter weight mechanism (SATYR 4CW) or powered using a hydraulic pumping unit (SATYR 4H), or via electrical motor (SATYR 4E).