I've owned draws like this one and seen the slots for the separating slats but when I purchased the item there where no slats. Neither where there any pantalets explaining where I could procure said slats.
The two smaller drawers were exactly what I needed. It is well made sturdy drawers work smoothly. It rolls on the casters on our hardwood floors without a problem.
The file cabinet came with no instructions or a receipt. I will keep the cabinet only because it the height I was looking for. Its doesn't have the extra cross bar so I could arrange my files in to different directions