| | Housings
 | 1000 Series | * Thread size: 1/4", 3/8", 1/2" * Cartridge size: 2.5" x 10" (9 3/4" and 9 7/8" will fit) * Color: White or clear with white cap
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  | 1000R Series | * Reinforced with pressure cap release * Thread size: 3/4" * Cartridge size: 2.5" x 10" (9 3/4" and 9 7/8" will fit) * Color: Clear or Blue with black cap
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  | XL-20 | * With pressure cap release * Thread size: 3/4" or 1/2" * Cartridge size: 2.5" x 20" * Color: Blue with black cap |
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  | JUMBO | * With pressure cap release * Thread size: 1" * Cartridge size: 4.5" x 10 " * Color: Blue with black cap
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  | BIG-BLUE | * Includes pressure cap release * Thread size: 1" or 1.5" * Cartridge size: 4.5 " x 20 " * Color: Blue with black cap
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  | RO (Reverse Osmosis) | * Thread size: 1/8" * End port * Color: White |
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