In order to make custom fit brailers, we will need the length, width, and depth of your bins. You can start by measuring the length and width of your hatch opening. Use the brailer hooks in your bins for this, going from hook to hook. For the depth, measure to the deepest point in your bin from the brailer hooks. Please measure twice to ensure a perfect fit. For quality purposes, brailers should not exceed 50" on any given measurement.