#4 Bag Filters

All Filters’ 20-inch bag filters are designed to deliver efficient performance across various uses, including aquariums, car washes, HVAC systems, reverse osmosis (RO) systems, and food and beverage production. Model 4 bag filters offer a variety of micron ratings, from extremely fine 1 micron filtration to larger 800 micron options, making them suitable for everything from precision particle removal to pre-filtration.

20" Bag Filter Cross Reference Chart

Size

Rating

SpiroPure

Pentek

BP Series

BP Series

Glazed Polypropylene Felt

#4 (4" x 15")

  • 1 micron

  • 5 micron

  • 10 micron

  • 25 micron

  • 50 micron

  • 100 micron

  • 200 micron

BE Series

BE Series

Polyester Felt

#4 (4" x 15")

  • 1 micron

  • 5 micron

  • 10 micron

  • 25 micron

  • 50 micron

  • 100 micron

  • 200 micron

BN Series

BN Series

Nylon Monofilament Mesh

#4 (4" x 15")

  • 50 micron

  • 100 micron

  • 150 micron

  • 200 micron

  • 250 micron

  • 300 micron

  • 400 micron

  • 600 micron

  • 800 micron

  • BN-420-50 / 255255-03

  • BN-420-100 / 255032-03

  • BN-420-150 / 255033-03

  • BN-420-200 / 255034-03

  • BN-420-250 / 255035-03

  • BN-420-300 / 255036-03

  • BN-420-400 / 255037-03

  • BN-420-600 / 255038-03

  • BN-420-800 / 255039-03

High-Quality Filters at Affordable Prices

All Filters offers a large selection of products to ensure you always find the right filter for your system. The cross-reference chart makes it easy to find a compatible filter. Simply determine the micron rating you need from your current #4 bag filters, then match the brand or model number in the Pentek column.

SpiroPure filters aim to provide the same quality as original manufacturer filters, yet they can cost 30–50% less. These filters are available in the following media types and series:

  • Glazed Polypropylene Felt (BP Series): With excellent chemical resistance and dirt-holding capacity, these filters are ideal for uses like water treatment plants and chemical processing.
  • Polyester Felt (BE Series): Durable, cost-effective, and compatible with a wide range of fluids, these 20-inch bag filters are well-suited to uses like food and beverage production, pharmaceuticals, and general manufacturing.
  • Nylon Monofilament Mesh (BN Series): BN Series #4 bag filters offer precise surface filtration with reusable materials, making them ideal for uses like paints and coatings, ink filtration, and electronics manufacturing.

Benefits of Shopping with All Filters

If you need help finding filters that fit your system, our dedicated customer support team is ready to assist and available seven days a week. Here are some more benefits of shopping at All Filters:

  • Competitive pricing: Quality filters at affordable prices plus discounts on quantity orders.
  • Free shipping: Enjoy free shipping on Super Value deals and orders over $99.
  • Email reminders: Receive email reminders for filter replacements to stay on top of maintenance and ensure optimal performance.

Buy #4 Bag Filters Online

Keep your filtration system running efficiently with model 4 bag filters from All Filters. With a large selection of filters in various micron ratings and media types, finding the right filter for your system is quick and easy.

Our friendly and knowledgeable staff are ready to guide you to a compatible replacement for your specific model. Most orders are shipped the same day, so your water filter replacements will arrive quickly. Order #4 bag filters online today and enjoy high-quality filters at affordable prices.