Big Blue Filter Housing 4.5 x 20 - 3/4 Inch For Business The solid state circuitry utilizes

The solid state circuitry utilizes a symmetrical square wave sampling voltage to eliminate plating and extend electrode life

Calibration: Adjustable

*Stated values are for each tank

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Big Blue Filter Housing 4.5 x 20 - 3/4 Inch For Business The solid state circuitry utilizes4. 5" X 20" Commercial Grade Single Big Blue Cartridge Filter Housing 3 4" Inlet The 4. 5 x 20 Big Blue Cartridge Housing is a Commercial Grade Housing that will handle heavy filtration needs for years. It accepts any industry standard 4. 5 x 20 filter cartridge which includes, pleated, melt blown, string, gradient density, carbon and any number of specialty filters. Features: Manufactured from the highest quality, FDA grade, 100% NSF listed