Tucson Tube Lights Tube lights can add natural light to places you never thought were possible. Tube lights are ideal for smaller places: • Closets • Hallways • Laundry Rooms • Inside Bathrooms • Other hard to reach recessed spaces Tru-Skylights offers a tubular skylight size for every need. Tube kits are available in: 10", 12", 13", 14", 18" and 21" sizes. Optional tubular kit installation accessories are also available: • Extension pipes • Light kits • Manual dimmers • Remote room dimmers