Wire Decking with rear upturned waterfall is for customers who want waterfall to rise upwards in the back. The inverted waterfall acts as a back stop and prevents cartons from being pushed off the back of the rack. It is not designed to act as a pallet stop. Standard wire decking waterfalls downward 1-1/2" over beam face. If you want wire deck to waterfall upwards 1-1/2" at back of shelf you should request custom "inverted waterfall" wire decking.