By Waterco
Part # 4590-45
Manufacturer Code 635008
Dimensions 4.5" X 0.45"
THIS IMPELLER IS 4 1/2" IN DIAMETER THE OPENING IN FRONT IS 1 7/8" THE SIDE IS 7/16" & THE VEINS ARE 1/4" THICK. THE JANDY MHP & MHPU IMPELLER IS AN EXACT REPLACEMENT # 5020-028