The Beverage-Air 203-043A-- capillary tube is a replacement part that is suitable for use with compatible Beverage-Air glass-door merchandisers to meter the flow of refrigerant. The capillary tube fits Beverage-Air models MT15, MT17, MT19, MT20, MT22, and MT23. It has an inside diameter (ID) of 0.054" and an outside diameter (OD) of 0.106" and measures 108" long. This replacement part is approved by the original equipment manufacturer (OEM).