Reemay™ is Spunbound Polyester made with a continuous filament construction to minimize fiber migration that adds strength and there are no binders to limit filtering area. It is offered in a 3 ounce media.
If replacing the Sundance Spa filter OEM # 6000-134, order Horizon part numbers 17-175-1610 and 17-175-1615 for 2 6000-134 replacements.