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Refillable Cartridges

Shop refillable filter cartridges for custom water treatment media and reusable filtration setups. These empty canisters can be filled with compatible carbon, resin, phosphate, or specialty media for a specific application. Compare cartridge size, cap and screen design, media compatibility, flow direction, housing fit, and service requirements before building or refreshing a filter.

Filters

Hydronix EC-4520W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 20 - IFilters
Hydronix EC-4520W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 20 - IFilters
Hydronix

Hydronix EC-4520W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 20

EC-4520W
in stock
$23.95 - $23.95
$23.95
$23.95 - $23.95
$23.95

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

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$23.95 - $23.95
$23.95
$23.95 - $23.95
$23.95
Hydronix EC-4510W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 10
Hydronix

Hydronix EC-4510W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 10

EC-4510W
in stock
$12.93 - $12.93
$12.93
$12.93 - $12.93
$12.93

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

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$12.93 - $12.93
$12.93
$12.93 - $12.93
$12.93
Hydronix

Hydronix Clear Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10

EC-2510C
in stock
$7.23 - $7.23
$7.23
$7.23 - $7.23
$7.23

Hydronix empty cartridges can be used with carbon, resin, KDF, or any other media. Made from high-impact polystyrene to withstand continuous use an...

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$7.23 - $7.23
$7.23
$7.23 - $7.23
$7.23
White Empty Water Filter Cartridge For Pre or Post Use Durable 2.5" x 20" - IFilters
Hydronix

White Empty Water Filter Cartridge For Pre or Post Use Durable 2.5" x 20"

EC-2520W
in stock
$10.01 - $10.01
$10.01
$10.01 - $10.01
$10.01

Hydronix Empty Cartridges can be used with carbon, resin, KDF or any other media. Made from High Impact Polystyrene to withstand continuous usage a...

View full details
$10.01 - $10.01
$10.01
$10.01 - $10.01
$10.01
Hydronix White Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10
Hydronix

Hydronix White Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10

EC-2510W
in stock
$6.99 - $6.99
$6.99
$6.99 - $6.99
$6.99

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

View full details
$6.99 - $6.99
$6.99
$6.99 - $6.99
$6.99
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