Rainbow | sku: 732235 Rainbow Automatic Chemical Feeder Flow Indicator Commercial Flow Indicator. Commercial Free standing. Fits Pentair auto feeders models 320, 322 and 300-29x.Clear bodyComes with 1/2 in. feed linesFeatures corrosion resistantMeasures 7-1/2 in. L x 2 in. H x 5 in. W Log in for pricing