Hey kelton325, figured I'd chime in to your questions about my A/V rack in your own thread.
The rails that I purchased from Parts-Express are the 45U Penn-Elcom
model. I actually used a hack saw and cut them down by 3, so the rack is actually 42U.
The only other parts I used were some rack screws from PE
, which came with the nylon washers included.
As far as construction is concerned, I screwed the rack casing directly into the studs, shifted out 5/8" to be flush with the drywall after it went up. The rails are attached with some pretty large 3" lag screws that pass all the way through the casing and into the studs every 3 or 4".
Grand total for everything in the rack except the shelves and faceplates comes out to roughly $50...pretty tough to beat that! Of course, the MA custom faceplates can really bump the pricing up quite a bit, so if you're looking to save some cash, there are a number of threads around here where guys are making their own faceplates for a couple of bucks that look just as good as the MAs.
Theater is looking great, keep up the momentum!