Tube Specification	Size(inch)	OD(mm)	Thickness(mm)
IDF	1"	25.4	1.2
IDF	1.5"	38.1	1.2
IDF	2"	50.8	1.5
IDF	2.5"	63.5	2.0
IDF	3"	76.2	2.0
IDF	3.5"	89.1	2.0
IDF	4"	101.6	2.0