I have a new 75 gallon tank (48”x18”) that I converted to a sump. These are baffles are really nice and thick acrylic. There are 3 - 4” filter sock holders. The sock holders have a variety of mufflers or even a solid piece to close the hole. The skimmer baffle is adjustable. There’s an additional baffle to make a refugium section that I didn’t glue in. Unfortunately this sump didn’t fit in my stand, so I had to buy a different sump. The tank and baffles are brand new. $250 No shipping!