That plastic is sturdy enough to hold 100lbs of expensive electronics?
It's very sturdy. Can hold a lot more weight than that. Like I said, it's not the same rack. You can buy new at the large hardware stores.
I finally found an image of what mine looks like. Looks like I got ripped off. New they are $14 at Lowes. I paid $7 each for 2 shelves in a garage sale. The 4 posts and shelves are individual pieces that stack together. I have my power supply / surge protector on the bottom, then my Receiver, then my BD player.
When I get my 2nd receiver, the BD player moves to the empty top shelf and the new receiver to the 2nd shelf. It's plenty sturdy for this stuff, as long as it's in an out of the way place, like my closet where it won't get knocked around.
The Pioneer SC-67 is about 17 1/2 inches wide. There will be about 3/8 inch clearance on each side, and it'll stick out the front and back about 2 inches each side.