Whynter Intake / Exhaust Hose for Portable Air Conditioner, 5.9 inch diameter, (ARC-EH-TYPE-L) Exhaust hose for Portable Air Conditioner Models ARC-110WD, ARC-122DS, ARC-122DHP, ARC-12S, ARC-12SD, ARC-12SDH, ARC-131GD, ARC-14S, ARC-14SH and ARC-143MX, ARC-141BG 5.9" diameter Extendable up to 59"