Leviton LB32P rough-in bracket for use with Leviton LB32S Ceiling Speakers and Leviton LB32B Trim Adapter Bracket (both sold separately). Acts as a placeholder and cutting guide during construction so that your speaker is installed exactly where you want it. Built-in wire management loops insure that wiring is securely placed and easily located during speaker installation. 9-1/4" internal diameter, so this should also work with other speakers that require an 9-1/4" opening; just be sure to check the fit before you install it.
