✅ REPLACEMENT FOR - The HFLIME14-01 is a compatible replacement for Filbur: FC-3921, Limelight Hot Tub, 2018 + model Pulse, Flash, Flair, Prism, Beam 1, Limelight and Watkins Spas and other compatible models. Original manufacturer's names and part numbers are for reference only. Look for the Hurricane Filters exclusive turquoise end caps to ensure you're getting a premier filter made in the USA. 📏 DIMENSIONS - We manufacture to tighter tolerances than other pool filter brands. This product measures: Length 14 inches, outer diameter 6.375 inches, Top hole 2 inches, Bottom hole 2 inches. Measure your current filter's dimensions if you're unsure of product fit. 🌊 SUPERIOR FILTRATION – Our advanced point bond filter media has tighter filtration capabilities compared to trilobal media material or classic non woven media. That means a superior filtration of biomass, dirt, debris, hair, leaves and critters to help keep your pool or spa aseptic, clean and safe for your family. 💰 SAVE MONEY – We’re trusted by pool companies, commercial swimming pools and our most important customers, residential pool and spa owners across the United States. Our filters last longer and are easier to clean, which means less money spent on filters every season and reduced wear and tear on your pump. 🌀 GET SWEPT UP IN CLEAN – Hurricane pool and spa filters is proud to be a USA company with domestic production, warehousing and office space. Save big with superior pleat material, end caps and max flow cores compared to imported pool and spa filters. 1-Click Buy, Add-to-Cart or sign up to Subscribe & Save to get the best price! Hurricane Filters - HFLIME14-01 Advanced Spa Filter Cartridge - Replacement for Filbur FC-3921, Limelight Hot Tub, 2018+ Pulse, Flash, Flair, Prism & Beam, Limelight Watkins