Physical, Mental and Visual Skills: Ability to walk, stand, sit, push, pull, reach above shoulders, fine repetitive motion, bend, stoop, climb ladder, ability to lift 50 pounds continuously for long periods of time up to 8 hours per day. Lippert is a leading, global manufacturer and supplier of highly engineered products and customized solutions, dedicated to shaping, growing and bettering the RV, marine, automotive, commercial vehicle and building products industries.