Together Nortek Linear Corp, LLC (OSCO) and DF Supply, Inc. are offering the highest quality gate openers in the United States. The Nortek/Linear/Osco name brand is built on innovation and sets the standard high on all their automatic gate openers. We are the largest online gate opener supplier in the USA. If you are interested in purchasing a gate operator, make it a Nortek/Linear and be sure to let us earn your business.