Cart, 102sqft,4-3/16″ot,4-3/16″ob,8-11/16″dia,25-11/16″L,4oz|81003

💧 Darlly Filtration 81003 Replacement Filter Cartridge — 102 sq ft

This is a 102 sq ft replacement filter cartridge from Darlly Filtration, part number 81003. It measures 8-11/16″ in diameter and 25-11/16″ long, with a 4-3/16″ open top and a 4-3/16″ open bottom. It uses 4 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

• StaRite Posi-Flo TX & TXR Cartridge Filter
• StaRite Posi-Flo II PTM135 Cartridge Filter
• Pentair/StaRite Posi-Flo II PTM50/70/100 Cartridge Filter

📐 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.