Pentair Polymer/Steel Wall Quick Niche Assembly P/N: 620004 One look at the Quick-niche is all it takes to see that this is a product that really lives up to its name. It is an easy to- install, super-sealing light niche for vinyl liner pools. It features a revolutionary lock-ring design that mounts and seals like a vinyl inlet fitting fast, secure, and totally leak proof Revolutionary design mounts and seals like a vinyl inlet fitting No screws directly through the pool wall as with conventional vinyl niches Designed for quick and easy, one-person installation Rubber gasket over-molded on seal ring for superior sealing Built-in current-collecting ring for maximum safety Zero wall panel exposure Fits standard niche panel