100 sqft Caldera Filter 

The Unicel C-8399 cartridge serves as a direct replacement for Caldera's OEM 73722 filter, engineered for specific Caldera spa models. This 100 sq ft filter delivers reliable performance when properly matched to your spa's existing specifications. Before installation, confirm dimensional compatibility with your current filter to ensure seamless operation and maximum filtration efficiency.

Filter details: 

• Diameter: 8"
• Length: 16-1/2"
• Top: Handle
• Bottom: 3-5/8" Open with lip seal
• Media: 100 sq.ft.
• Filter Media: 3oz Reemay
• Pleat count: 259

Compatible with the following Caldera Spa models:

Compatible replacement for:

• Caldera OEM 1039607
• Caldera OEM 73722
• Filbur FC-3965
• Pleatco PCD100W