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The FiltersFast FFDG-20BB-1 is a compatible replacement for the Pentek DGD-2501-20. The FFDG-20BB-1 utilizes a dual-gradient filter media that works as both a pre-filter and post-filter, which eliminates the need for a step-down filtration system. The outer-layer of the FFDG-20BB-1 acts as a sediment filter with a 25 micron particulate rating, and the inner-layer further improves your water's quality with an impressive 1 micron rating. The FFDG-20BB-1 should bre replaced every 3 - 6 months for maximum efficiency.

FiltersFast FFDG-20BB-1 Filter Specifications:

• Part Number: FFDG-20BB-1
• Replaces Part Numbers: DGD-2501-20; 155360-43
• Capacity: 8,000 gallons; 3-6 months (depending on usage and water quality)
• Dimensions: 4-1/2" x 20"
• Micron Rating: 1 micron
• Flow Rate: 20 GPM
• Reduces dirt, sand, silt, rust, and scale particles

The Filtersfast FFDG-20BB-1 replaces the following part numbers:

• SWC-45-2001
• DGD-2501-20
• 155360-43, 155360
• GD-2501-20BB
• WDGD-2501-20
• DEV9108-40, DEV910840
• S5-30
• 15-052-02
• FPMB-BB1-20
• DG2501209HC
• SPC-45-2001
• SDF-45-2001
• VX01-20BB

The FiltersFast FFDG-20BB-1 is compatible with the following filter systems:

• Pentek 20" x 4.5" Big Blue filter housings
• Any Standard housings that use a 20" L x 4.5" D filter

The Pentek DGD-2501-20 replacement dual-gradient density filter is a 2-in-1 that works as both a pre-filter and post-filter, which eliminates the need for step-down filtration systems in your home. The outer-layer acts as a sediment filter with 25 micron particulate reduction, and the inner-layer further improves your water's quality with an impressive 1 micron rating. Pentek recommends replacing the DGD-2501-20 every 3 - 6 months for optimal performance and efficiency.

Pentek DGD-2501-20 Filter Specifications:

• Part Number: DGD-2501-20; 155360-43
• Capacity: 8,000 gallons; 3-6 months
• Operating Temperature: 40 -145°F
• Flow Rate: 20 GPM @ < 1 psi
• Dimensions: 4-1/2" x 20"
• Micron Rating: 25 pre-filter; 1 micron post-filter
• Resists chemicals and corrosion
• NSF 42 Certified
• For more information, view the product manual

The Pentek DGD-2501-20 replacement fits the following filter housings:

• Ametek, US Filter, Culligan 20" Big Blue housings
• Standard size 20" filter housings with a 4-1/2" diameter