Darlly Cartridge [100 sq ft, 4" OD Top x 4" OD Bottom x 10-1/8" dia x 19-1/2" L] (11001) unicel Matching the correct replacement screen

Matching the correct replacement screen helps preserve intended fit and supports more dependable cleaner operation

Replacing it with the correct SPDT momentary model helps preserve original behavior and installation style

Useful when replacing a worn or damaged original button

helping simplify the sensing arrangement in the system

Sometimes the difference between a spa that feels average and one that feels great comes down to small details

Darlly Cartridge [100 sq ft, 4" OD Top x 4" OD Bottom x 10-1/8" dia x 19-1/2" L] (11001) unicel Matching the correct replacement screenThe Darlly 11001 filter cartridge is designed for compatible filtration applications and offers 100 square feet of filtration area with 4 inch top and bottom openings, 10 1 8 inch diameter, and 19 1 2 inch length. A cartridge like this is useful because it restores filtration capacity while preserving the original larger body diameter and matching end dimensions. Dimension specific cartridges are practical replacements when the housing depends on both