Saratoga Spas OEM 74407-98 spa filter (4CH-30)

Saratoga Spas

Replacement numbers

Unicel 4CH-30, Filbur FC-0141

Fits Saratoga Spas OEM 74407-98.

Diameter 4-5/8" (117 mm)Length 11-7/8" (302 mm)30 sq ft

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Unicel4CH-30
Pleatconot found in source (No 4CH-30 line in the 2023 Unicel cross-reference. Deactivated list: PTL25P4 replacement PSG27.5P4. PSG27.5P4 spec, PDF p.31, does not print 74407-98.)
FilburFC-0141
Topmolded cone handle
Bottom1-1/2" MPT
Ø 4-5/8" (117 mm)11-7/8" (302 mm)Side view · end views belowTopBottom
Top: molded cone handle
Bottom: 1-1/2" MPT
Drawn to scale from the listed diameter and length. Handles, threads and closed ends are drawn as symbols, not to scale. 30 sq ft media.

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For Saratoga Spas, 4CH-30 cartridge (OEM 74407-98) sits in Saratoga Spas. The cross-reference prints OEM 74407-98; Unicel 4CH-30; Filbur FC-0141. 4-5/8" across, 11-7/8" long, top molded cone handle, bottom 1-1/2" MPT, 30 sq ft.

74407-98 carries this note from the catalogs: Longest of the Saratoga 1-1/2" MPT cartridges. Unicel: 4-5/8" x 11-7/8", 158 pleats, 4 oz media, 30 sq ft, OEM 74407-98. Filbur FC-0141 is the same length and prints 27 sq ft. The Pleatco cell on that Filbur row, PTL25P-4, is on Pleatco's deactivated list and is sent to PSG27.5P4. PSG27.5P4's own spec is 4-3/4" x 11-3/8", 28 sq ft, 'Saratoga Spas Circulation Pump,' and it does not print 74407-98 or 4CH-30, so it is not stored as the equivalent. The 2023 cross-reference has no 4CH-30 line. The 30 stored here is Unicel's.

4CH-30 (OEM 74407-98), Pleatco side: No 4CH-30 line in the 2023 Unicel cross-reference. Deactivated list: PTL25P4 replacement PSG27.5P4. PSG27.5P4 spec, PDF p.31, does not print 74407-98..

74407-98, Filbur note: Saratoga section PDF p.25: FC-0141, 4-5/8" x 11-7/8", 1-1/2" MPT, PTL25P-4, 4CH-30, 27 sq ft..

Before ordering 4CH-30, compare it with 4CH-950 differs by Unicel 4CH-950, Filbur FC-0173, 12" long, top semi-circular handle, bottom 1-1/4" SAE, 25 sq ft, OEM 74408-99, note says 1-1/4" SAE, not MPT. Unicel's Saratoga line: OEM 74408-99, 4-5/8" x 12", 25 sq ft. Spec table: 139 pleats, and the description also names Dimension One. Filbur FC-0173 is 11-7/8" long. The Saratoga section's sq ft column is 27; the size table says 25 sq ft. The Pleatco cell PDO-UF25P2 is deactivated with replacement N/A, so no Pleatco number is stored. Dimension One's OEM for this Unicel number is 1561-04. The 25 and 12" stored here are Unicel's.; and 4CH-24 differs by Unicel 4CH-24, Pleatco PGS25P4, Filbur FC-0131, 9-3/4" long, 25 sq ft, OEM 20254-238, note says 1-1/2" MPT, 4-5/8" x 9-3/4", 25 sq ft. Unicel's spec table gives 173 pleats. Pleatco PGS25P4 and Filbur FC-0131 print the same size and 25 sq ft for OEM 20254-238. This is the Saratoga cartridge the three catalogs agree on..

Pleatco does not have a number on this row. Search 74407-98 or the Saratoga Spas part you pulled out of the spa.

Left blank on purpose: Area 30 (Unicel) vs 27 (Filbur Saratoga section). No live Pleatco number that prints this OEM. The deactivated-list replacement PSG27.5P4 is 11-3/8" and 28 sq ft and does not name 74407-98..

Where those figures are printed: Unicel 2026 Replacement Guide on 4CH-30 (Saratoga list PDF p.55: 74407-98 = 4CH-30, 4-5/8" x 11-7/8", 30 sq ft, 1-1/2" MPT. Spec table PDF p.7: 158 pleats, 4 oz, 30 sq ft. Price index PDF p.88: 30 sq ft.). Filbur Catalog & Reference Guide on 4CH-30 (Saratoga section PDF p.25: FC-0141, 4CH-30, 27 sq ft, cell PTL25P-4). Pleatco 2023 Catalog on 4CH-30 (Deactivated list: PTL25P4 replacement PSG27.5P4. Spec table PDF p.31: PSG27.5P4 does not name 74407-98. Cross-reference PDF p.47 has no 4CH-30 line.).

If you know the Saratoga Spas model and not the part number, use the Saratoga Spas filter by model and year lookup.

Check the cartridge you removed

Measure diameter, length, and both ends, then compare them with the figures above. The steps are in the measuring guide. Why the bottom decides whether it seals: open-end vs threaded filters. Power, the retainer, and not running the spa empty: how to install a cartridge. Number formats: how Filbur, Unicel and Pleatco numbers compare.

The same 4CH-30 number is also on the Sundance, Dimension One Spas, Freedom Spas pages.

Other Saratoga Spas cartridges

All 6 Saratoga Spas spa filters

Every number on this row, on one screen: cross-reference lookup. Published clean and replace intervals for this cartridge, and a buy link for the numbers above: replacement schedule and reorder. The interval comparison by brand: calculator.

Cleaner and test strips

Hose rinse and soak steps are in how to clean a cartridge. Named cleaners and strips are in filter cleaners and test strips.

Filter cleaner and test strips

Sources

Not in sources: Area 30 (Unicel) vs 27 (Filbur Saratoga section). No live Pleatco number that prints this OEM. The deactivated-list replacement PSG27.5P4 is 11-3/8" and 28 sq ft and does not name 74407-98..