https://www.forulift.com/products/residential-cargo-lift.html The single lead rail model can be installed in a narrow place, a small shop with a warehouse, and the warehouse in light cargo. The max load capacity of our residential cargo lift for sale is 500kg. 1. Single Lead Rail Model (500kg) The single lead rail model of the cargo elevator for the home can be installed at a narrow place, a small shop with a warehouse, and the warehouse in light cargo. The max load capacity is 500kg. 2. Double Lead Rail Model (1000kg - 5000kg) The double lead rail model is the most popular one in the residential cargo elevator market as it has a large demand for most industries. The load capacity is 1000kg to 5000kg.