21-Tuner SWM LNB for Slimline Dishes (3D2LNB). 8 x 4.9 x 4.3 inches. Receivers, Slimline satellite dishes. Built-in SWM Multiswitch gives a single wire to feed multiple receivers. Will feed 21 tuners. The dish you choose depends on what satellites your locals are broadcast on. DIRECTV 21-Tuner SWM LNB for Slimline Dishes (3D2LNB). Simplify your DIRECTV system with this LNB that lets you use up to 21 DIRECTV receivers without an external multiswitch. This is just the front portion, this does not include the reflector or any other accessories. Easy installation onto any existing Slimline dish. Unlike the SL5, the SL3 receives satellites 99, 101 and 103. A Non-DVR Receiver = 1, a Non-Genie DVR = 2, a Genie DVR = 5. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.