The Filbur FC-3711 is the correct replacement for the Unicel C-4304 R and for the following:

• SLM
• Empire
• Buddy-L
• Waterworks
• H2O Recreation
• Pelican Recreation
• Haughs D-8 Skim Filter

The Filbur FC-3711 Pool & Spa Filter is a closed top replacement water filter cartridge designed to efficiently filter swimming pool and spa water. This compatible replacement filter is made in the U.S.A. and features polyester media with highly effective pleat folds that captures particles in the water. The pleat count of this pool filter cartridge is 51.

Specifications:

• Part Number: FC-3711
• Replaces Part Number: Unicel C-4304 R
• Better water clarity
• More efficient filtration
• Dimensions: 4 1/4" x 8"
• Meets OEM Specifications
• Filter area: 5 square feet
• Longer time between cleanings

The top end cap is closed and the bottom end cap is open. The inner diameter is 1 15/16" and features wide constructed, break-resistant support bands.