Part	#	Diameter (mm)	L (mm)	L1 (mm)	Tube Diameter (mm)
BTU	001	18.90-19.19	47	44.1	17
BTU	002	19.20-20.00	47	44	17
BTU	011	20.01-20.90	52.5	49.4	18
BTU	012	20.91-21.80	52.5	49.4	18
BTU	021	21.81-22.90	56	52.8	20
BTU	022	22.91-24.10	56	52.6	20
BTU	031	24.11-25.20	57.5	54	22
BTU	032	25.21-26.40	57.5	54	22
BTU	041	26.41-27.50	57.5	53.8	24
BTU	042	27.51-28.70	57.5	53.8	24
BTU	051	28.71-29.80	63.5	59.5	26
BTU	052	29.81-31.00	63.5	59.3	26
BTU	061	31.01-32.10	63.5	59.4	28
BTU	062	32.11-33.30	63.5	59.1	28
BTU	071	33.31-34.80	63.5	59	30
BTU	072	34.81-36.20	63.5	58.9	30
BTU	081	36.21-37.30	73.5	68.7	33
BTU	082	37.31-38.40	73.5	68.5	33
BTU	083	38.41-39.60	73.5	68.3	33
BTU	091	39.61-40.60	73.5	68.2	36
BTU	092	40.61-41.80	73.5	68	36
BTU	093	41.81-43.00	73.5	67.8	36
BTU	101	43.01-44.30	75	69.5	39
BTU	102	44.31-45.60	75	69.3	39
BTU	103	45.61-47.00	75	69.1	39
BTU	111	47.01-48.50	75	68.8	43
BTU	112	48.51-50.10	75	68.7	43
BTU	113	50.11-51.70	75	68.5	43
BTU	121	51.71-53.20	82	75.2	47
BTU	122	53.21-54.70	82	75.2	47
BTU	123	54.71-56.20	82	75.2	47
BTU	131	56.21-58.40	84	77.4	51
BTU	132	58.41-60.60	84	76.9	51
BTU	133	60.61-62.80	84	76.8	56
BTU	134	62.81-65.00	84	76.5	56