Restore ultimate purity and crystalline clarity to your Caldera Vacanza Series hot tub. Specially engineered to handle the high-volume water flow of Caldera's multi-seat spas, this premium 65 sq. ft. filter cartridge is a precise direct replacement for OEM part #76136. Utilizing 234 precision-pleated point-bonded filtration fibers, it maximizes debris retention while maintaining optimal water pressure for a pristine home oasis.

Key Features & Benefits

• Advanced Vacanza Flow Matrix: Engineered with 234 premium, uniform pleats to trap fine oils, sediment, and micro-particles without restricting pump flow.
• Heavy-Duty Structural Core: Outfitted with an injection-molded, high-impact center core that resists structural collapse under high-jet suction.
• Dual Open-Hole Setup: Designed as a true drop-in replacement with wide 3" open ends for an airtight friction fit inside the filter canister—no tools required.
• Commercial-Grade Durability: Built with impact-resistant, chlorine-proof end caps that protect the filtration pleats from premature splitting or chemical wear.

Technical Specifications

• Filtration Area: 65 sq. ft.
• Outer Diameter: 8-1/2" (216 mm)
• Length: 10-5/8" (270 mm) (10.5" nominal)
• Top Style: 3" Open Hole
• Bottom Style: 3" Open Hole
• Pleat Count: 234 Pleats
• Media Weight: Premium 3 oz. fabric

Compatibility & Cross-Reference Guide

To guarantee a perfect fit, please verify that your existing filter is a large, wide cylinder with a hollow center. This filter is a verified cross-reference for the following industry part numbers:

Part Number Cross-Reference:

• Caldera / Watkins OEM: 76136, 1113801, 31114, 71827, 71828
• Unicel: C-8465, C-8465RA
• Filbur: FC-3960, FC-3960M
• Pleatco: PWK65, PWK65-M, PWK65-EC
• Baleen / Darlly: AK-7007 / 80651

Supported Spa Models:

Fits 2009 to Present Caldera Vacanza Series hot tubs, including:

• Palatino™
• Marino™
• Vanto™
• Tarino™
• Celio™

(Also compatible with legacy Hot Spring Limelight Bolt and Glow models).

Pro Maintenance Routine for Peak Efficiency

1. Weekly Hose-Down: Pull the cylinder out and spray down the wide pleat channels with a garden hose to clear hair and surface sediment.
2. Monthly Chemical Wash: Body oils build a blinding film on 3 oz. media. Soak the cartridge in a dedicated spa filter degreaser every 4 weeks to restore original porosity.
3. The 12-Month Rule: Spa filtration media loses its electrostatic fine-particle attraction after a year of heavy sanitation use. Swap out your filter every 12 to 18 months to protect your heater tube and minimize pump strain.