4CH-20 UNICEL 20 SQ FT FILTER

The Unicel 4CH-20 filter is a replacement cartridge designed for hot tubs and spas with a 20-square-foot top-load filtration system. It is constructed with 100% spun-bonded polyester material and a high pleat count for efficient filtration, helping to maintain clean and clear water. 

Key features:

• Purpose: The 4CH-20 is a replacement filter cartridge for spas and hot tubs. It is designed for top-load installation.
• Filtration: It has a filtration area of 20 square feet, which helps capture dirt and debris. The cartridge has a high pleat count (204 pleats), which improves its filtration capacity.
• Material: The filter media is made from durable, spun-bonded polyester (3 oz Reemay 2033), which offers durability and consistent flow.
• Connectors: It has a molded cone handle at the top and a 1.5-inch male pipe thread (MPT) on the bottom. 

Compatible spa models:

The Unicel 4CH-20 is compatible with various spa models, including: 

• Master Spas
• Saratoga Spas
• Softub
• Vita Spas (Specifically PVT 25, though you should remove the "pad adapter" from the skimmer first). 

Cross-reference replacements

The Unicel 4CH-20 can be replaced with equivalent filters from other brands. Before purchasing, you should always check the exact dimensions to ensure proper fit. Other cartridges compatible with the same systems include: 

• Pleatco: PHC25, PHC25-XP, PHC25P4
• Filbur: FC-0125.
• Filters Fast®: FF-0125.