Pentair FIBERworks® OptiFusion™ 22000400 Complete Lens Assembly Fits 1-1 per 2 Inch FIPT White - OptiFusion lenses superior optic and light engineering delivers the most advanced, highest transmission underwater lenses available. FIBERworks® "invisible" gunite lens assembly eliminates the conspicuous white flange and fits over 1" PVC conduit or inside 1 1 per 2" PVC conduit. The exclusive "lens before liner" vinyl pool assembly allows you to install cable and lens before you install the liner.