Cart, 50sqft, 2-1/8″ot, 2-1/8″ob,4-15/16″dia, 13-5/16″L, 3oz | 40506

💧 Darlly Filtration 40506 Replacement Filter Cartridge — 50 sq ft

This is a 50 sq ft replacement filter cartridge from Darlly Filtration, part number 40506. It measures 4-15/16″ in diameter and 13-5/16″ long, with a 2-1/8″ open top and a 2-1/8″ open bottom. It uses 3 oz filter media.

To be sure it is the right one, check the size of your old cartridge against the table, then look for your filter in the filters listed below or the cross-reference numbers further down.

📏 Specifications

✅ Filters this cartridge is listed for

• DFM50
• Dynamic Series 50 sq ft
• Dynamic Series 50 sq ft after 1993
• Rainbow Dynamic 50
• TWM Flo-Pro
• Ultra Skim Filter 50 sq ft
• Pentair Rainbow RDC Series Inline Filter
• Pentair Rainbow RTL/RCF Series Top Load Inline Filter
• Waterway In-Line Filter
• Waterway Top Load Filter
• Waterway Top Mount Skim Filter
• Waterway TWM Cartridge Filter Package
• Pentair Rainbow Dynamic Series IV Skim Filter
• Waterway Dyna-Flo Plus/Dyna-Flo Low Profile Top Mount Skim Filter
• Waterway Front Access Skim Filter
• Waterway Flo-Pro Above Ground Skim Filter
• Waterway Ultra Skim Filter

🛁 Spa makes it is listed for

Aber Hottub, Accent Spas, After Hours Spas (Hydro), Alps Spas, American Spas, Apollo Spas, Aqua Mystic, Aqua Tech Spas, Aquiform/Infinity, Arcadia Spas, Arctic Spas, Arizona Pacific (DFA), Artesian Spas (Coleman), Baja Spas, Barefoot Spas, Beachcomber, Beachcraft Spas, Belize Spas, Blue Falls (Canada), Blue Pacific, Bullfrog Spas, Cal Spas, Charisma Spas, Clipper Spas, Coast Mountain Spas (Canada), Coast Spas (Canada), Coleman Spas (Maax), Crystal Waters Spas (Canada), Custom Molded Products, DFA/Arizona Pacific, Diamante Spas (US Tooling), Diamond Back Spas, Diamond Spas, Discovery Spas, DM Industries/Vita Spas, Dynasty Spas, Freedom Spas, Gatsby Spas, GPM Industries, Great Lakes Spas, Great Northern Engineering, Grecian Spas, Haughs/Niagara Whirlpool, Hawkeye Spas, Heldor Spas, Hydro Pool, Hydro Spa, Icon Health & Spas, Infinity Spas, J.E.M. Spas, Lifestyle Spas (Canada), Maax Spas, Maax Spas/Coleman, Maax Spas/Statewood Spas, Marathon Spas, Millennium Spas, Moonwater Spas, Morgan Spas, Niagara Whirlpool (Haughs), Northwest Spas, Orca Bay Spas, Pageant Spas, Pentair/Rainbow, Phoenix Spas, QCA, Rainbow/Pentair, River Valley Spas, Rubadub Tub, Safari Spas, Savannah Spas, Seahorse Spas, Sequoia Design, Signature Spas, Sonoma Spas, Southwest Spas, Spa Crest, Starlight Spas (US Tooling), Statewood Spas (Maax Spas), Streamline Spas, Sun Ray Spas, Sunbelt Spas, Suncountry Spas, Sundance Spas, Sunrise Spas (Canada), Sunset Spas, Superior Spas, Thermo Spas, Tiara Spas, US Spas, US Tooling & Spa, US Tooling/Diamante Spas, US Tooling/Starlight Spas, Vita Spas (DM Industries), Warm Springs Spas, Waterway, Wild River Spas, Wind River Spas.

🔄 Cross-reference part numbers

These part numbers are listed as alternatives for this cartridge. If one of them is printed on the end cap of your old cartridge, this is the replacement.

📐 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.