The ESHOPPS Cliff Hanger 4 filter sock holder is the most innovative way to add mechanical filtration to any sump. Cliff Hanger incorporates a 1 in (single) bulkhead inlet, and up to 1.25" wide adjustable sliding clamp mount with easy access top mounted thumb screws. Featuring a quiet spill over method filter sock cradle with safety overflow slots with clear side viewing panels. The Cliff Hanger 4"includes (1) 4 in x 200 micron filter sock.