Bowers & Wilkins CCM 663 Reduced Depth In-Ceiling Speakers - Pair

RD stands for Reduced Depth so this speaker will fit into tighter spaces than the standard CCM663. A shallower cone and a redesign of the easy-fit QuickDogs frame reduce the depth to a more usable 92mm, while retaining everything that makes the CCM663 such a great in-ceiling speaker.