DIMENSION OF STEREO AND SPEAKERSStereo unit, Cutout Diameter (W*D) 5.39 x 3.43.
Total Mounting Depth: 2.91 Speakers unit, Product Dimensions 4.4"" (W) x 4.4"" (H) x4"" (D) "PACKAGE KIT INCLUDES1 Herdio Marine Boat Yacht Outdoor USB AUX AM/FM Radio Receiver + 1 Pairs (Total of 2) Herdio 100W 4 2-Way Mount Marine Speakers (Black)