Spacers for Husky Workbench Drawer w/Gridfinity

My Husky 46" Tool Storage Workbench short drawers fits 11 grids from gridfinity wide with some room to spare. I made these spacers to keep the general look but also fill in the space on the sides.

I'm still learning 3d modeling and this is my first attempt (using openscad)…forgive me for any errors and I welcome feedback!