Our Industrial Series linear actuators are offered in six stroke lengths from 4" to 24" (nominal), they come in two versions:ACME screw (500 lb. dynamic load rating, 1000 lb. static) and ball screw (1000 lb. dynamic load rating, 3000 lb. static). All ID series linear actuators can come standard with thermal overload protection, and a torque limiter for overload protection.Stroke Length - 4.01Retracted Length - 12.05"Extended Length - 16.06"Load Capacity - 500 poundsStatic Load - 1000 poundsSpeed at Max Load - 0.55 in/secRecommended Fuse - 20 AmpIP Grade - IP 65-total dust protection, water resistantUsed on Crary Air Reel.