These Low Pressure, 1/2" T-Post Mounted Hurricane 80 Sprinklers are designed for municipal water type connections, such as a garden hose. They operate at 40-120 psi of water pressure and have a 50'-70' max spray diameter. Bolt-on, billet aluminum, Quick Release, T-Post Mounts allow you to use our Side Mount Hurricane 80 fire sprinklers to protect your fence line from wildfire, stopping the fire before it crosses onto your property. The option of an adjustable sprinkler head adds the flexibility to allow you to direct the outgoing stream of water in a limited spray pattern, under use conditions when a full 360º radial spread isn't optimal, such as when mounted up against structures or property lines.