I think I used about 16 feet of 1/4" stainless, 3-4 feet across the front and rear crossmembers, and 7-8 feet along the side. I haven't gone up to the MC yet, and will probably use hose for that. I bought straight sections, not rolls. I used a 37 degree Ridgid flaring tool and a Parker or Imperial bender. All of mine uses AN -4 fittings.