Cartridge,50sqft,2-1/8″ot,2-1/8″ob,4-15/16″,6-5/8″L,3oz,Pair | 40505-2PK

💧 Darlly Filtration 40505-2PK Replacement Filter Cartridge — 50 sq ft (pair)

This is a 50 sq ft replacement filter cartridge from Darlly Filtration, part number 40505-2PK. It is sold as a pair. It measures 4-15/16″ in diameter and 6-5/8″ long, with a 2-1/8″ open top and a 2-1/8″ open bottom. It uses 3 oz filter media. It is listed for the equipment shown below, so check the model on your own unit against that list.

📏 Specifications

✅ Listed for

• 35sqft Skim Filter (Sold as Pair)
• DSF-50 Skim Filter (Sold as Pair)
• Pentair Rainbow DSF Model DSF35 DSF50 Skim Filter

🛁 Spa makes it is listed for

Arizona Pacific (DFA), Beachcomber, Beachcraft Spas, Caribbean/Catalina, Clearwater Spas, DFA/Arizona Pacific, Diamante Spas (US Tooling), Diamond Back Spas, Discovery Spas, Freedom Spas, Grecian Spas, Legend Spas, Lifestyle Spas (Canada), Moose Mountain Spas, Rainbow/Pentair, Signature Spas, Starlight Spas (US Tooling), Sundance Spas, Sunrise Spas (Canada), Thermo Spas, US Tooling & Spa, US Tooling/Diamante Spas, US Tooling/Starlight Spas, Waterway.

📐 How to check the size

Measure your old cartridge from end to end for the length, and across the pleats at the widest point for the diameter. Then check the hole in the center of each end cap: an open end has a hole straight through, a closed end is solid. All of these should match the specifications table above.