Final Filtration Slime Bag Xtra Filter [18" x 30"] (SB1-5018) waterfall and this Pleatco version uses

and this Pleatco version uses the PXG1836 reference

Matching the correct 2 inch white compact configuration helps preserve intended fit and dependable plumbing operation

or no longer moving water efficiently

Useful when the original support is damaged or worn

A correct replacement should make the spa feel familiar and dependable again

Final Filtration Slime Bag Xtra Filter [18" x 30"] (SB1-5018) waterfall and this Pleatco version usesThe Final Filtration Slime Bag Xtra filter is designed for compatible pool cleaning and debris capture applications where fine material needs to be collected before it returns to the pool or system. A filter bag is useful because it helps trap dirt, slime, and suspended debris, supporting cleaner water and easier maintenance. This replacement is especially useful when the original bag is torn, clogged beyond cleaning, stretched, or no longer capturing