EZHD72W Pre-assembled baffle, 10 oz Loudspeaker & transformer 25/70.7V 4W xfmr/51-8/EZ by Atlas Sound is a Support System that transfers the composite weight of the loudspeaker, baffle, and enclosure to the ceiling's support members via adjustable support rails that is included in the package. The rails may be adjusted vertically and then secured to the specially designed, pre-mounted enclosure brackets with screws (furnished). No tile bridge or time-consuming screw mounting is necessary.
The support rails are heavy-gauge CRS and finished in a galvanized coating.