That's an AWESOME buy wellpoison!!!!!!
If you plan to store nuts/bolts/hardware in it or supplies like cutting discs, etc and you work in a dusty environment or grind or paint a lot in the area, I'd go to a fabric store and buy enough black or red vinyl or heavy canvas to make a cover for the front.
Hem the ends if canvas then velcro to the top horizontal face above the top bins. You're making basically a fabric roll up big door and dust shield.
You can roll it up and tie when you need access or just flip it over the top but when lowered, it REALLY helps keep the dust out of the cubbies.
You can't vacuum the dust out of each cubby lest you **** up all your bolts
so blow gun is the only alternative but that blows shiz and dust all around again.
Just a thought and used heavy for open hdwre storage racks like that in heavy welding shops.
FWIW back in the day when that was likely originally purchased I'd bet it was fairly inexpensive or free. Wurth made their money when you filled and refilled the cabinets with Wurth products. I have five very nice storage cabinets that I paid $35 each from Wurth back in the late 80s. I would have glady paid much more!