The ESHOPPS Cliff Hanger R Filter Sock holder is the most innovative way to add mechanical filtration to any sump. Cliff Hanger incorporates 2 X 1 bulkheads 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 R includes a 4 x 7" micron filter sock.