4½" x 20" Replacement Filter Cartridges
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Empty Refillable Cartridge 4.5" x 20" for Big Blue 20" HousingsSKU#:EC2045WPrice: $24.80 As low as Price: $22.32
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Empty Semi-Clear Refillable Cartridge 4.5" x 20" for Big Blue 20" Housings with Sediment FilterSKU#:CP-EC2045WPrice: $25.80 As low as Price: $21.93
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PureT 20 micron 20" x 4.5" Melt-Blown Polypropylene Sediment Filter CartridgeSKU#:BVB2000020Price: $25.63 As low as Price: $21.79
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PureT 5 micron 20" x 4.5" Melt-Blown Polypropylene Sediment Filter CartridgeSKU#:BVB2000005Price: $25.63 As low as Price: $23.07