The ESHOPPS Cliff Hanger 4 and R Filter Sock holder is the most innovative way to add mechanical filtration to any sump. Cliff Hanger incorporates a 1 (single for 4 & dual for R) 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. Cliff Hanger 4 includes (1) 4x 200 micron filter sock.