These 2 filters are brand new still in there plastic sealed wrap. The 6CH-940 Filter is a 2 pack of cartridge filters designed for spa hot tubs, compatible with Pinrek brand systems. These easy-to-install filters have a height of 6 inches and a length of 8 inches, making them suitable for hot tubs. Manufactured in China, this set includes 2 filters to ensure a clean and clear water experience. Perfect for maintaining the water quality in your spa hot tub, these filters are a reliable and convenient replacement option.