General Constructed of galvanized steel, this round opening pre-mounting plate is used to mount 3½" LUNA fixtures. Mounting The plate includes mounting holes and tracks to satisfy any type of installation. Alignment notches on plate to help aligning multiple plates. Plate also includes a pressure clip to secure driver to plate. Compatible Fixtures • RA35-12G • RA35S-12G • RA35-12F • RA35S-12F