No suction. There is an 1" 1/2 between the drawer and the back of the carcass so enough room to accommodate the air displacement.
I kept this chest but it’s not holding any tools as intended. My older son wanted it pretty bad. I was more than happy to give it to him. I can take more pictures if you want.
I am going through the archives (run out of disk space) to find the on with the wooden runner.
Worst case I still have a small storage area under my drum sander where the drawers use wooden runners. I can take some picture tomorrow.
Abbas, Castro Valley, CA