Overview Reviews Similar Products Product Description Filbur FC-3120 3.5 Sq Ft O. D. 2 3/4" Length: 5 1/8" Top: 1 1/16" Open Bottom: 1 1/16" Open Replaces: Unicel C-2305 C2305 Pleatco PSB3.5 Aladdin 10301 SPA-IN-A-BOX : Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view FC3726 - O. D. 4 3/4" x Length 8" - 5 Sq Ft $10.75 $8.95 Add to Cart Quick view FC-2401 - O. D. 5 1/4" x Length 10" - 45 Sq Ft $42.95 Add to Cart Quick view FC3725 - O. D. 4 3/4" x Length 8" - 5 Sq Ft $10.00 $8.95 Add to Cart