Aqua Ultraviolet 1 1/2" Union for Ultima II Filter (MPN A50184) by Aqua Ultraviolet $ 13.19 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Aqua Ultraviolet 1 1/2" Union for Ultima II Filter (MPN A50184) Ultima II Filter Replacement Parts 70407