Made in the USA New in Factory Packaging Replaces the following: Rainbow Dynamic 100, Rainbow Dynamic Series II, Rainbow Dynamic III, RTL/RCF-100, Dynamic Series V-DSC-100, 172633, 17-2633, R173436, 17-3436, 17-175-1605, APCC7270, 19901 Unicel - C-4999 (C4999) Filbur - FC-2397 (FC2397) Pleatco - PRB-100 (PRB100)