Practically brand Red Sea glass sump from a Reefer XL 525 setup. 35.5"Lx19.75Wx16.75H. Approximately 31 gallon volume. The one baffle for the overflow drain chamber cracked when I filled the tank with freshwater for a leak test. Red Sea sent a new one. Has built in filter sock holders and float valve for ATO. If anybody could use this I am open to trades or cash. I estimate it weighs around 100 pounds.