Power Post. - Fast, one-step connection. 2 1/4in. inside diameter accepts conduit of different sizes. Made of impact and corrosion resistant PVC, suitable for wet locations. No unsightly junction boxes or time-taking assembly. Just a trouble-free installation. Designed for line voltage (120-Volt) landscape lighting. Eliminates need for above or below ground boxes. Built-in stabilizer removes need for concrete. Accepts 1/2 NPSM thread. UL and cUL listed U.S. Patent No. Des. 359,570 Canada Patent No. 76774