Perfect Fit: This LVJUSEN PMA40L spa filter replacement can replaces Filbur FC-0317/ Master Spas: X268365, X268543 ,X268514, X268511/ Pleatco PMA40L-F2M/ SD-01116/ Unicel 6CH-402. Disclaimer: All mentioned manufacturer/ model are only for compatibility reference. This product is not an official product. LVJUSEN is an independent brand. Compatible with Hot Tub/ Spas Brand: Master Spas: Twilight Series TS 6.1/ Twilight Series TS 6.2/ Twilight Series TS 67.15/ Twilight Series TS 7.1/ Twilight Series TS 7.15/ Twilight Series TS 7.25/ Twilight Series TS 8.1/ Twilight Series TS 8.2/ Twilight Series TS 8.25/ Twilight Series TS 8.3/ Twilight Series TS 8.35/ Twilight Series TS 87.3/ Twilight Series TS Fit/ Twilight Series TS MP; Phelps: MP LSX 700/ MP LSX 800/ MP LSX 850/ MP LSX 900 Trilobal Fabric: This Replacement hot tub filter for 6CH-402 incorporates advanced filtration technology with "trilobal fabric" and appropriate pleats to maximize water flow. This ensures that the finest dust and debris are effectively trapped, providing you with clean and clear spa water. Easy to Clean& Reusable: The long lasting inner frame and thicker filter paper of the filter significantly extend the service life. This screw on spa filters is washable, simply rinse with cool water and remove impurities for reused Maintenance: For consistent filtration efficiency, it recommended to replace the filter every 6 months -1 year of use. Des: Diameter: 6" Length: 9-1/4" Bottom Hole: 2" Bottom Style: MPT 40 sq.ft Replaces: Filbur: FC-0317 Master Spas: X268365/ X268543 Pleatco: PMA40L-F2M SD: SD-01116 Unicel: 6CH-402 Compatible with: Master Spas: Twilight Series TS 6.1/ Twilight Series TS 6.2/ Twilight Series TS 67.15/ Twilight Series TS 7.1/ Twilight Series TS 7.15/ Twilight Series TS 7.25/ Twilight Series TS 8.1/ Twilight Series TS 8.2/ Twilight Series TS 8.25/ Twilight Series TS 8.3/ Twilight Series TS 8.35/ Twilight Series TS 87.3/ Twilight Series TS Fit/ Twilight Series TS MP Phelps: MP LSX 700/ MP LSX 800/ MP LSX 850/ MP LSX 900 Disclaimer: The mentioned manufacturer/models are only for compatibility reference. This product is not an official product. LVJUSEN is an independent brand. What’s in Box: 2x filter