![MO-power vault adapter, bz](http://infolighting.com/cdn/shop/products/mo_pwr_vault_adapter_e20a02b1-412a-44d5-8540-3037a7902f89_464x638.jpeg?v=1476922685)
To install a MonoRail system to a vaulted ceiling, add a power vault adapter to each power feed. Installs to the power feed (sold separately) and adjusts to any angle to position rail parallel to the floor. When using a dual-feed canopy or surface transformer order two.