HPLC Replacement Carbon Filters, Accessory Type Colormetric Carbon Replacement, For Use With HPLC Coalescing/Carbon Filters, Material Plastic, Compatible Mfr Part Number 28161, 28162, Compatible Grainger Part Number 1YNK8, 1YNK9, Diameter 3 1/2 in, Height 6 in, Includes (3) Replacement Filters, Package Quantity 3