Product Information
Description
Filbur FC-1920 50 Sq Ft Pool Filter Cartridge
Clean water for your Mytilus FMY 50.
The Filbur FC-1920 (SKU PST-PC1920) is a 50 square foot replacement filter cartridge built to drop straight into your Pentair PacFab Mytilus FMY 50 filter housing. It measures 7-7/8" wide by 11-1/8" tall with open 3-1/16" ends top and bottom, so it seats exactly where your worn-out cartridge came out. Restore full flow and crystal clear water without paying for the OEM part number.
Why PST Customers Pick This
Exact Mytilus FMY 50 Fit
Engineered to the same 7-7/8" x 11-1/8" footprint as the original cartridge in the Pentair PacFab Triton Mytilus FMY 50, so it slides in and seals without spacers or trimming.
Full 50 Sq Ft Of Media
A full 50 square feet of pleated filter fabric across 152 pleats catches dirt, oils, and fine debris, then rinses clean with a garden hose for repeat use.
Bonded Polyurethane Caps
Thermally bonded polyurethane end caps lock the pleat pack to the core so the cartridge holds its shape under pump pressure and won't blow out at the seam.
Reinforced PVC Core
A punched PVC center core keeps water moving freely through the inside of the cartridge and resists collapse, even as the pleats load up between cleanings.
Open Both Ends
Both the top and bottom end caps are open with a 3-1/16" inside diameter, matching the original sleeve-over-standpipe mounting in your FMY 50 tank.
Cross-References Made Easy
Replaces Pleatco PC-1920 / PFAB50, Unicel C-7678, Aladdin 15009, and Pentair 17-4981, so any of those numbers on your old cartridge points right here.
Specifications
Frequently Asked Questions
Which filter does the FC-1920 fit?
It is the replacement cartridge for the Pentair / PacFab Triton Mytilus FMY 50 filter. If your cartridge measures 7-7/8" across and 11-1/8" tall with open 3-1/16" ends, this is the correct part.
What part numbers does this cartridge replace?
It cross-references to Pleatco PC-1920 and PFAB50, Unicel C-7678, Filbur FC-1920, Aladdin 15009, and Pentair 17-4981 (174981). Any of those numbers printed on your old cartridge means this one will fit.
How many of these do I need for my filter?
The Mytilus FMY 50 uses a single 50 sq ft cartridge. Order one per filter tank. If you have the larger Mytilus MY-150, that unit uses a different cartridge, so confirm your model before ordering.
Is this a reusable cartridge?
Yes. Rinse the pleats with a garden hose when pressure climbs about 8 to 10 PSI over the clean starting pressure. Most cartridges last one to three seasons before the media wears out and needs replacing.
Can I install this myself?
Yes. Shut off the pump, relieve pressure at the air bleed, open the tank, lift out the old cartridge, drop the new one over the standpipe, then reseal and restart. No tools beyond a hose are required for a basic swap.
Order The Filbur FC-1920 From PST
Authorized Filbur dealer. Backed by the PST Pool Supplies service team.
Additional Info
| Category | Pool Products Pool Filters Replacement Filter Cartridge |
| SKU | PST-PC1920 |
| MPN | PC1920 |
| Replaces | PC-1920 |
| Manufacturer | Filbur |
| Weight | 2.5 lb |