HY1500HW Horizontal Mount Bracket for HS150W/1500WTThe HY 1500HW Mount Bracket is designed to mount speaker system to a wall or ceiling in a horizontal configuration. It allows the speaker orientation angle to be adjusted from 15 upward to 60 downward when mounted on a wall, and from 0 (horizontal) to 90 downward when mounted to a ceiling. Product Features Made for HS 150B HS 1500BT Horizontal orientation Product Specifications Finish: Steel plate, paint, white Dimensions: 485. 4 x 288 x 90 mm (W x H