20" × 4-1/2" BB Flow-Max Pleated - 1 Mic Filter 45 The germicidal bulb operates at

The germicidal bulb operates at 14 watts

HT 101 and HT 123 Series RO Systems

Whisper quiet at lower flows

Filter Media: Polypropylene Fiber Cord

20" × 4-1/2" BB Flow-Max Pleated - 1 Mic Filter 45 The germicidal bulb operates atThe Watts Flow Max FM BB 20 1 Filter Cartridges outperform wound, spun, melt blown, resin bonded and other "depth" type filter elements because the chemically resistant pleated polyester media provides increased surface area and longer life, and are cleanable on filter of 5 microns and up. Specifications: Sediment Filtration 1 Micron Nominal Chemically Resistant Pleated Polyester Filtration 100% Cellulose Free CONSUMER NOTE: All Watts branded