The Gibraltar G-3000 50' Vertical Lift Barrier is tested and certified to ASTM F2656-07 M50 P2. This is a hydraulic powered final denial barrier that deploys from below grade. The system allows you to secure four lanes with a single barrier. The barrier has EFO capabilities of 2 seconds if required. This barrier is available in 24-1" to 50'-0" clear opening with an M50 P2 rating when interpolated with our 24' M50 P1 barrier.