DEEP PLEAT CARTRIDGE RTL SERIES
The RD-RTL25 to RTL100 filters use a 5″ diameter cartridge with a 2 1/8″ diameter center hole. Cartridges are made of polyester material to provide maximum service in either fresh or saltwater. Standard pleated polyester cartridges last 1 to 2 years before replacement. Use between pH of 3 to 11 and temperature to 140 degrees F and 80 psi max. Each filter uses a different length cartridge. Cartridges can withstand chlorine and mild acids.