7-14 is designed for air conditioning and refrigeration condensate drains, condensate pump discharge lines and humidifier overflows. Made of high-quality vinyl with smooth interior and exterior that allows easy flow and flushing and prevents sediment accumulation. Its walls are thick enough to resist kinks but are lightweight, flexible, can withstand rough handling, and heavy usage while maintaining dimensional stability. Easy to shape, bend, and install. ID = 0.250 in OD = 0.336 in Wall Thickness = 0.043 in