Beachcomber Hot Tub Replacement Filters
Beachcomber has been building hot tubs in Langley, BC since the 1970s and they've been remarkably consistent about filter design: the PRB25-IN (a 25 sq ft drop-in with open ends) covers most Beachcomber tubs from 1994 onward. The Unicel equivalent is C-4326, the Filbur is FC-2375, and any of the three will fit. If your existing cartridge is brown around the seams or won't rinse clean anymore, those are the numbers you want.
The 1 Beachcomber configuration below covers the modern era. Older Beachcombers may use a different cartridge size.
1 models indexed below
Quick tip: the fastest way to confirm the right cartridge is to pull yours and read the part number off the end cap. The owner's manual is the backup if the printing has worn off.