Price Match Guarantee Polk Audio RC55i 2 Way In-Wall Speakers White (4 Speaker Bundle) These FOUR compact RC55i speakers can be used as main or surrounds in a theater system or throughout your home for whole house audio as they fit in practically anywhere, in countless in wall or in ceiling positions. Easy installation in 3 steps. Cut a hole, feed the wires through, and simply drop the speaker in puts built in audio within reach. The rotating cams secure the speakers safely and ensure vibration