[salmtpa]

Hi Jeff,
Putting the doors on after the fact is a bit of an undertaking. The way the system goes together is you work your way from the bottom up, sliding locking devices into the slotted channels in the posts to support the shelves as well as one part of the hinge mechanism for the doors. So if you plan on using doors you need to buy them upfront since the hinges also get inserted into the slots at assembly. It makes it easy after the fact to take the doors off and then put them back on at will since the hinge itself splits into two pieces that lock together as a whole. It's hard to tell in this photo but there is a little tab you pull and the hinge just separates, allowing the door to be removed. You can also see in the pic the mounting points for the shelving. They slide into the slots from above and get locked in place wherever you want the shelf.

But adding doors after the unit is assembled would require you to dissamble the top shelf (the solid, really heavy one!), remove all the equipment, loosen and slide out all the intermediate shelving and supports, then install the hinges and reassemble the rest. I have a dedicated room so I can easily live with no doors. If it's in a main living area you'd probably want the doors for aesthetic reasons.

Sal