Your filer will be rolled on cardboard and then placed in a polymailer with some bubble wrap.

Pleatco PRB50-IN-EC Spa Filter Cartridge Replacement for Unicel: C-4950, Filbur: FC-2390, OEM Part Numbers: 03FIL1600, 17-2380, RTL-50, 100533, 6540-471, 25391, 817-5000, R173434

Direct Spa Filter Cartridge Replacement for: C-4950, FC-2390, 03FIL1600, 17-2380, RTL-50, 100533, 6540-471, 25391, 817-5000, R173434. Also works with the following: Dynamic Series IV - DFM, DFML, Series II & III RTL/RCF-50, Series I RDC-50, RDC-50S, Waterway, Custom Molded Products

Specifications: DIAMETER: 5", 127 mm, LENGTH: 13.3125", 338.1375 mm, TOP HOLE SIZE: 2.125", 53.975 mm, BOTTOM HOLE SIZE: 2.125", 53.975 mm, MEDIA SQUARE FEET: 50, MEDIA WEIGHT: 3 oz.

Featuring: Reinforced Center Cores, Super-Bond Bands, Break Resistant End Caps and Pleatco Smart Tracker Time Stamping

PleatcoPure: Free Flow Core for Maximum Water Flow Paired with Pleatco Advanced Filtration 3 Oz. Fabrics that are Uniformly Point Bonded with the Highest Fiber Count in the Industry

US Designed and Engineered to provide the cleanest water filtration possible for the health, safety and happiness of every pool and spa owner