What type of work truck do you have? Aluminum ladder racks are designed with different styles and sizes so that they can be used on various vehicles. If you're an electrician or a Painter, buy a model made specifically for your type of ladder. Those who work with electricity and cables need an insulated ladder, A Ladder made of fiberglass and therefore heavy. Those who work without e... https://www.gentili.us.com/2022/11/15/what-are-all-the-three-different-types-of-ladder-racks-for-trucks/