The Magnadyne LS3CMW speakers sold as a pair are a great addition for automotive/RV wether you need to add/replace a missing speaker in your vehicle or add a pair to enhance the sound while driving. The 3 inch speakers have 4 oz. magnet weight, 90 watts maximum power handling, 160-20kHz frequency response, and magnetically shielded. The speaker also includes a flying speaker wire with 2 pin Molex plug. In terms of measurements, the speaker has a minimum diameter mounting hole required 5 5/16", 1-3/4" mounting depth, and outside diameter 6 5/16".