6-1/2" Ceiling Weather Resistant 150W Water Resistant design which can be used in high humidity areas such as outdoor patios, bathrooms or laundry rooms. Great for covered porches & patios! With swivel tweeter adjustment, you can easily create sweet spot for your listening area. Better crossover , tweeter and woofer materials add sound quality. Aluminum grill cover is rustproof for wet application. 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.