A:Answer The receiver/CD unit is 4 1/2 inches high, but if you're planning to slide it into an enclosed space, you will want to allow space above it for air flow around it so the heat can dissipate. Its 8 1/4 inches wide, and about 11 inches deep (I would plan for a depth of at least 13 inches to allow space for wires/cables and connectors on the back). The speakers are 9 1/2 inches high, 5 3/4 inches wide, and 9 1/2 inches deep.