Item #	Dimension A	Dimension B	Orifice	Tube B Size
UER-FF-64	1.93 in	1.83 in	0.125 in	1/4 in
UER-FF-66	2.03 in	1.93 in	0.25 in	3/8 in
UER-FF-128	2.18 in	2.03 in	0.38 in	1/2 in
UER-FF-1612	2.40 in	2.18 in	0.63 in	3/4 in