1800gph Modular Marine bean animal overflow box in good condition. Link to specs from website below. I would recommend replacing the gaskets since they're about 5yrs old and getting a little brittle. There's also 1.5" pvc glued into the three drain bulkheads but it's trimmed such that you can still glue a coupler to it, or you can just replace the bulkheads entirely. Drilling template included, but I'm afraid I lost the bit. I had this on my 120g for 5yrs and once it was dialed in, it was utterly silent. $100 shipped.
https://modularmarine.com/collectio...-low-profile-overflow-box-with-removable-weir

https://modularmarine.com/collectio...-low-profile-overflow-box-with-removable-weir
