Mk30h water tube

[squirrelboydeluxe]

Could someone PLEASE tell me where to get the copper watertube that runs up the back of the leg on a 30h?
I am in the HVAC trade and have tried every imaginable plumbing/refrig size

Thank you
George Bressler

[G Stillwill]

Not sure of the size of the 30H but the KG4 and 20H used 3/8 copper tube the 30H should be the same the top has to be a double flare.