Covers are chrome plated steel, and snap on. 2 1/4" depth with cover on, outside width 5 1/2". Should fit in 4 1/4" diameter hole. Ceramic magnet, 8 ohms, 5w, made in Japan. Never used, cones look healthy, have no rips. Fill those holes in your door panels !!! CALLS ONLY due to spammers, all calls returned.