1) T5, T9 circular standard fluorescent lamps are low-pressure mercury discharge lamps with a clear tubular envelope 2) Uses high efficiency lamp phosphor with a special cathode design 3) Characterized with high lumen, energy saving, long service life, soft light and superior color rendering 4) The special circular shape is ideal for decorative lighting in shops, hotels, residence and offices as common and economical lighting 5) Flicker-free and instant start 6) Geared with kinds of lighting fixtures 7) Power: a) T9 20W, 22W, 30W, 32W, 40W b) T6 22W, 28W, 32W, 40W c) T5 22W, 32W, 40W, 55W 8) Color temperature: 2, 700K - 6, 500K 9) Bulb type: T9, T6, T5 10) Base: G10q, 2G x 13