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Premium 50 Sq. Ft. Replacement Filter Cartridge for Caldera Spas | OEM #73532

Premium 50 Sq. Ft. Replacement Filter Cartridge for Caldera Spas | OEM #73532

Regular price $39.99
Regular price $70.00 Sale price $39.99
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Keep your Caldera hot tub water crystal clear, pure, and inviting. Engineered for maximum debris retention and optimum water flow, this premium 50 sq. ft. filter cartridge is a direct replacement for OEM part #73532. Featuring reinforced end caps, a heavy-duty semi-circular handle, and precision-pleated filtration fabric, it delivers commercial-grade water clarity for your home oasis.

Key Features & Benefits
  • Crystal Clear Water Filtration: High-density, uniform filtration fabric traps fine sediment, lotion oils, and organic debris without restricting water pressure.
  • Built to Last: Re-engineered with robust, chlorine-resistant end caps and a high-strength core to withstand high pressure and frequent cleanings.
  • Effortless Maintenance: Includes an integrated, heavy-duty semi-circular top handle for easy removal and hassle-free cleaning.
  • Exact Fit Guarantee: Meets or exceeds original manufacturer specifications for a tight, leak-free seal that prevents unfiltered water from bypassing the pump.
Technical Specifications
  • Filtration Area: 50 sq. ft.
  • Outer Diameter: 7" (178 mm)
  • Length: 10-3/4" (273 mm) (11" nominal including handle/endcaps)
  • Top Hole: Semi-circular handle
  • Bottom Hole: 2-11/16" Open
  • Pleat Count: 260 premium pleats
Compatibility & Cross-Reference Guide

To ensure a perfect match, check the part number stamped on your existing filter's end cap or in your owner's manual. This filter is a direct replacement for the following manufacturer numbers:
Part Number Cross-Reference:
  • Caldera OEM: 73532, 1019401
  • Unicel: C-7350
  • Filbur: FC-3963
  • Pleatco: PCD50N
  • Baleen / Darlly: AK-60033 / 75017
Supported Caldera Spa Models:
Fits 2003 to Present Caldera hot tubs, including:
  • Paradise Series: Martinique, Kauai, Salina, Aventine
  • Legacy Series: Select Highland and Cumberland models
Pro Care Tips for Maximum Lifespan:
  1. Weekly Rinse: Spray the filter down with a high-pressure garden hose once a week to wash away loose debris and hair.
  2. Monthly Deep Clean: Soak the cartridge in a dedicated spa filter cleaner every 4 to 6 weeks to break down accumulated body oils and scale.
  3. Annual Replacement: Replace your filter every 12 to 18 months to prevent strain on your spa’s pump and maintain peak energy efficiency.

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