Hi prafersno,
It must have had something at sometime, but clearly it either has failed or just fallen-off. You can buy a Drawer Latch to add to it, similar to my upgrade here: Stronger Drawer Latch on a Minnie Winnie 22M Thanks, Eagle5
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2019 Minnie Winnie 22M on an E-450 frame
I have that sliding drawer, it houses the waste paper container. The small slotted hole in the front has a metal lever that pushes down to release the positive catch.
If I can think of it this week I'll take some pictures of it and either post them or PM them to you at your wishes.
__________________ 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA. "We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution." Abraham Lincoln