CSI Mechanical Home / Products / Outdoor Air Conditioners XV20i – 4TTV0 XV18 – 4TTV8 XL18i – 4TTX8 XR17 – 4TTR7 XL16i – 4TTX6 XR16 – 4TTR6 XR14- 4TTR4 Search for: Contact Us CSI Mechanical 1243-1 E Dixion Blvd Shelby, NC 28150 (704) 600-6267 Email Us: diane@csimechanical.com