I have been searching for several months for a pair of sliders that would support the weight of the batteries (260 pounds). Not only did they have to support the weight but had to be long/short enough to fit into the space allotted 23" max. Could they have not made it 24" as the sliders came in 18" then 24" and so on up to 48".
I had to choose the 18" and cantilevered beyond the back of the slider.
Pictures can be viewed here: