I just added some "heavy" equipment to my av rack (cheap crap) and I broke the shelf the amp was in. Good thing it was the bottom shelf. Can someone recommend a really strong AV rack that is rated 70+ lbs a shelf? I want something oversized or with open sides so the amps will stay cool/vented. I went out today and most of the racks I saw are rated at 30lbs. It doesn't have to be fancy, it will be hidden behind a curtain, but I am hoping to pick something decent up.