ULTRA-S10

Pleatco ULTRA-S10 (PLBS50 Filter Old Sku) (45 FT²). Filter for Nordic Hot Tubs. Compatible with (September 2021+): Nordic Sport 110V Nordic Impulse DP Nordic Rendezvous Nordic Escape MS/SE/LS Nordic Crown II & Crown LX Nordic Warrior XL Diameter 5 5/16" Length 10 1/8" Size 45 sq ft Top 2 1/8" hole Bottom 2 1/8" hole Model ULTRA-S10 Replaces Unicel C-5345 Filbur FC-2970 Master Deluxe 4-55-M50451 Cartridge-E PLBS50 Filter