In article ,
says...
--What I'd like to do is hang 'em beneath an existing shelf in some
way that doesn't include nailing the lid to it. Ideally I'd like to find
some extruded aluminum with a "top-hat" cross section. This way the
extrusions could be cut to length, drilled thru the middle and attached to a
shelf, spaced apart so that jar lids would slide between the horizontal
bits. So far I haven't spotted anything like this and I've been making my

Take a look at www.aircraftspruce.com; search for "hat section"

Henry Bibb