So I made this sump to go under my 75 gallon tank. Size is 16x39 approx and will hold 2 of your 4" filter socks. Then I went and bought a newer 250 gallon tank and decided to build a different sump. So I am selling this home made sump for $300. I got over $200 in materials and something similar would cost you over $500. I really really do not want to ship this so Pittsburgh PA area is where I am located.