The Atlantic Ultraviolet G64T5L UV replacement lamp is a replacement lamp for the Aquafine CSL-8R/60, CSL-10R/60, CSL-12R/60, CSL-16R/60, CSL-20R/60, CSL-24R/60; the Wedeco CI-2L,CI-4L, CI-6L, CI-8L, CI-10L, CI-12L, CI-16L, CI-20L, >CI-24L; Ideal Horizons IH-2L, IH-2L-HT, IH-4L, IH-4L-HT, IH-6L, IH-6L-HT, IH-8L, IH-8L-HT, IH-10L, IH-10L-HT, IH-12L, IH-12L-HT, IH-16L, IH-16L-HT, IH-20L, IH-20L-HT, IH-24L, IH-24L-HT, IH-32L, IH-32L-HT, IH-40L, IH-40L-HT, IH-48L, IH-48L-HT as well as a generic replacement lamp for many other UV systems. The G64T5L is a 1 single-pin double-ended (B1) lamp that is 61 inches long (1554mm). The lamp operates at 75 watts with a quartz outside diameter of 15mm. Replace this UV lamp every 12 months or 10,000 to maintain proper system efficacy.