Size 4 Filter Bag – Polypropylene (PO-P4S)

This Size 4 polypropylene felt filter bag (PO-P4S), also known as a Size 4 filter sock, offers efficient depth filtration for general-purpose use.
Customize your order with a 304 stainless steel ring or polypropylene flange (POL) to match your housing. Available in micron ratings from 1 to 200.

Key Features

• Size 4 (4.1" diameter × 14" length)

• Polypropylene felt media for depth filtration

• Offered in welded or sewn construction

• Optional 304 SS ring or POL flange

• Broad micron range (1–200 µm)

• Made in the USA 🇺🇸

• Compatible with most industry housings

Application Suitability

✅ General Industrial
✅ Water Treatment
✅ Chemical Processing
✅ Food & Beverage
✅ Plating & Parts Washing

Typical Applications

• Cooling tower filtration

• Paints and coatings

• RO prefiltration

• Parts washers

• Batch chemical processes