3/4 inch thick. I got used about 4 years ago and don't know the manufacturer name. Full sheet of acrylic on top with three access squares and covers. The sump doesn't add much value. The overflow is along the entire side. There are two return lines near the top of the overflow, and one return line opposite the tank, on the bottom, which can be easily plugged if not desired. The condition of the acrylic is pretty good, a shallow scratch here and there. On the opposite side of the overflow, there is some checking in the middle.
bump......lowered price to $1k - also will entertain offers of trades for reef ready 5 x 2 tall x 3 wide or 6 x 2 tall x 3 wide (can be 2 1/2 wide too) glass, eurobraced, with center overflow - please PM.