[. . . ] 08 / 10 Caution: This product is designed for ceiling installation only. [. . . ] Tighten the hex nut until the Coupling can no longer be turned by hand. Tighten the Lock Nut against the hex nut. B C H J Figure 1 H D 3. Due to various ceiling constructions, the installer must provide the pipe and its supporting hardware. Secure a 1-1/2" NPT pipe (not included) into the Mounting Flange. [. . . ] Refer to the Safety Belt TVM-SB instructions for proper mounting of the safety belt. [. . . ]