This 8-inch in-ceiling, weather-resistant speaker pair is great for high-humidity areas, including outdoor patios, bathrooms and laundry rooms. With high power handling and an 8-inch polypropylene woofer in each, these speakers deliver superior sound that covers large spaces. The ICE840WRS 8-Inch Weather-Resistant Ceiling Speaker Pair works well with a CL3 in-wall rated speaker wire, which is designed to run inside walls. Should I Purchase special cable for in-ceiling speakers? Wiring is not included with in-ceiling speakers so you will have to purchase some. While wiring requirements will depend on your local building codes, OSD Audio offers CL3/FT4 cable that is UL (fire) rated for all residential and most commercial in-wall and in-ceiling applications. (The exception is you cannot run this cable in heating or cooling ducts in commercial applications.) This cable includes a heavy-duty outer jacket approved for in-wall/in-ceiling installation. The high quality plastic jacket is also very flexible so it's easy to run the wires inside the wall.