Closed Height: 15-3/4' Ext. Height: 25-7/8' Eff. Area: 2.24 sq. inches Outside Diameter: 2-1/4' Rod Diameter: 1-9/16' Bottom To Port Diameter: 1-3/4' Plunger Thread: 11/4-11 NPT Collar Thread: 2-1/4-14 x 1-1/8 Mounting Hole: 1-1/4-11 NPT Weight: 16 lbs.