Featuring 37.5 square feet of 3-ounce basis weight media made of 100-percent polyester Reemay material, this Unicel 5CH-37 Cartridge Filter for Hot Tubs ensures high performance and dependable filtration over time. The uniform pleats and Reemay media deliver higher dirt-holding capacity and more time between cleanings. Plus, the smooth surface of the media makes it easy to maintain, resists degradation from chemicals, stands strong under pressure, and holds up to the rigors of multiple cleanings.

For optimal lifespan, clean the elements as per instructions and use a soft brush cleaning tool or filter cleaner for easy maintenance. Please note that the cartridge life depends on routine maintenance and spa water chemistry. Change your filter when there is a shorter cycle between cleaning, low water flow rate or high differential pressure, when the media has a tear, or if the center core collapses. The end cap is made of durable plastic that resists damage from chemicals and includes a 1.5-inch male thread/MPT and a bar handle for easy removal and replacement.

This 5CH-37 model of spa filters is compatible with Aquaterra Spas and Hot Springs Spas.

The Unicel 5CH-37 Spa Cartridge Filter is clearly the optimal choice to keep your hot tub or spa water sparkling.

Replacement 5CH-37 filter cartridge ensures your water stays clear so you can enjoy relaxing in your spa or hot tub
Features 37.5 square feet (221 pleats) of 3-ounce basis weight media that catches debris and particles down to an average of 20 microns in size
Sharp, uniform pleat folds maximize water flow, minimize pressure loss, and allow full use of the pleat surface to hold more debris
Constructed with 100-percent polyester Reemay material that balances dirt-holding capacity, cleanability and durability with excellent chemical resistance properties
Design includes a 1.5-inch male thread/MPT and a bar handle for easy cartridge removal and replacement
Durable end caps resist damage from chemicals and assure durability for the life of the cartridge
Compatible with Aquaterra Spas and Hot Springs Spas
Filter life depends on routine maintenance and spa water chemistry
Change filter when there is a shorter cycle between cleaning, low water flow rate or high differential pressure, when the media has a tear, or if the center core collapses
Media material: Spun-bonded polyester
End cap material: Plastic
OD: 5-5/16 inches
Length: 9 inches
Overall dimensions (L x W x H): 5.31 x 5.31 x 9 inches