Pneumatic Vibrator, Piston, Force Rating 397 lb, Bin Weight Capacity 3,970 lb, Max. Temp. 390 Degrees F, Inlet Port 1/4 in NPT, Outlet Port 1/4 in BSPP, No, Cast Iron Housing Material, Overall Length 5 3/4 in, Overall Width 3 5/8 in, Overall Height 3 5/8 in