Overview Reviews Similar Products Product Description Filbur FC-3840 20 Sq Ft O. D. 6 1/4" Length 8" Top: 2 5/8" Bottom: 2 5/8" Replaces: Unicel C-6620 C6620 PLEATCO PMS10-4 PMS20-4 ALADDIN 12002 MUSKIN : A3821 MUSKIN : FD-20 MUSKIN : FD-40 MUSKIN : FE-20 Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view FC0125 - O. D. 4 5/8" x Length 6 3/4" - 20 Sq Ft $25.00 $23.95 Add to Cart Quick view FC0185 - O. D. 4 5/8 x Length 6 3/4 - 20 Sq Ft FC-0185 $25.57 $20.95 Add to Cart Quick view FC3712 - O. D. 5" x Length 8" - 8 Sq Ft $17.95 Add to Cart