Panel Box, customizable

I initially made this in Tinkercad then I made a customizable .SCAD file in OpenSCAD.

a box is made of 6 different parts - 10 pcs total

"CORNERL_LH" - (corner L - length & height) - need 2 pcs
"CORNERL_WH" - (corner L - width & height) - need 2 pcs
"RIM" - (rim around top) - need 1 pc
"PANEL_LH" - (side panel - length & height) - need 2 pcs
"PANEL_WH" - (side panel - width & height) - need 2 pcs
"PANEL_B" - (bottom panel - with feet or no feet) - need 1 pc

Support is ne