Hydraulic Filter, Fluid Type Hydraulic, Filter Design Element Only, Length 18 1/2 in, Outside Dia. 3 21/32 in, Micron Rating 18, Description/Special Features Maximum Performance Glass Hydraulic Element, Height 18 1/2 in, Width 3 21/32 in, Inside Dia. 1 3/4 in, Includes (2) Grommets Attached