OPW/Knappco. 1st shift: 6am-4:30pm. Hamilton, OH. We recently invested in a new, state-of-the-art HVAC system at our 200,000-square-foot manufacturing facility in Hamilton, Ohio. We believe this to be more than just an upgrade. this will be an investment in our people and our processes so we can continue to bring quality products to our customers. Job Title: Shipping. For over 125 years, OPW has led the way in designing and manufacturing world-cl...