S1 SERIES PLEATED CELLULOSE CARTRIDGESS1 Series cartridges are manufactured from a pleated cellulose media and are designed for general water filtration purposes. The media is pleated around a polypropylene core for added strength and the ends are immersed in a thermo-setting vinyl plastisol. Embedding and sealing each end of the pleat in this fashion fuses the three components together forming a unified end cap and gasket. The overlap seam is sonically welded to reduce bypass, improving filtration efficiency. S1 Series cartridges are economically priced and highly effective at reducing sediment particles down to 20 microns in size.
Filter Size (W x H) - 4.5" x 20" (Fits all 20" Big Blue Housings)
Main Benefits:- Pleated design maximizes dirt-holding capacity
- Designed for general water filtration purposes
- Recommended for chlorinated water supplies
- Economically priced
- Nominal 20-micron rating
Specifications:- Maximum Dimensions - 4-1⁄2" x 20" (114 mm x 508 mm)
- Micron Rating - 20 (Nominal)
- Initial PSI Drop - 1.2 PSI @ 10 GPM (0.08 Bar @ 38 Lpm)
- Surface Area - 4280 in² (2.77 M²)
- Maximum Flow Rate - 35 GPM (132 Lpm)
- Filter Media - Resin-impregnated Cellulose
- End Caps - Vinyl Plastisol
- Core - Polypropylene
- Temperature Range - 40-145°F (4.4 - 62.8°C)
WARNING: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the unit.
CAUTION: Protect against freezing to prevent cracking of the filter and water leakage.
Pentek S1-20BB 20-Micron Sediment Filter,155305-43 
