Cartridge, 35sqft, 2-1/8″ot, 2-1/8″ob, 4-15/16″, 9-1/4″, 3oz | 40353

💧 Darlly Filtration 40353 Replacement Filter Cartridge — 35 sq ft

This is a 35 sq ft replacement filter cartridge from Darlly Filtration, part number 40353. It measures 4-15/16″ in diameter and 9-1/4″ 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. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.

📏 Specifications

✅ Listed for

• Dynamic 35sqft
• 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 Ultra Skim Filter

🛁 Spa makes it is listed for

Aber Hottub, After Hours Spas (Hydro), Belize Spas, Bullfrog Spas, Coast Mountain Spas (Canada), Crystal Waters Spas (Canada), Custom Molded Products, GPM Industries, Great Lakes Spas, Hydro Pool, Hydro Pool/Serenity Spas, Hydro Spa, Hydro/After Hours Spas, Leisure Bay/Rec Whs, Moose Mountain Spas, Orca Bay Spas, Rainbow/Pentair, Rec Whs/Leisure Bay, Serenity Spas (Hydro Pool), Sun Ray Spas, Waterway.

🔄 Cross-reference part numbers

These part numbers are listed as alternatives for this part.

📐 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.