Lots of shops call their food pans "anti-jamming", but I have not been able to find out what that means.
I don't think it's related to radio communication or making fruit jam :)
Here is an example:
Seasoned Advice is a question and answer site for professional and amateur chefs. It only takes a minute to sign up.
Sign up to join this communityThese pans (sometimes called chafing dishes) are designed to fit into a frame above water and a heat source to keep food hot. They are advertising that their pans won't get stuck (jam) in the frame.
As evidence, see this video (and this), which shows how even after pressure is applied the pan does not require effort to remove from the frame. (I found the video here, on a tradeKorea page advertising a similar pan, and it was produced by an account called 'ChefPro'.)
I refers to the fact that they won't jam up when stacked together.
ANTI-JAM STACKING LUGS - Each stainless steel steam table pan features anti-jam stacking lugs, so it won't stick to other pans when you take it out of storage. This feature allows you to save space by stacking pans without worrying about a hassle the next time you want to use them.