Pool/Spa Part – Hayward – Header Assembly UHSLN – FDXLFHA1930. Hayward Header Assembly UHSLN (FDXLFHA1930). Hayward Pool Products Inc. Catalog Part Number: 6223-194. View more great items. Bio-Dex Phosphate Removal, Gallon (PHOS04). Patio Furniture Covers – Chair Covers CLASSIC ACCESSORIES. Pleatco PFS2448-EC DE Grid Filter Replacement for Unicel: FS-2004, Filbur. Pleatco PA120-EC Pool Filter Cartridge Replacement for Unicel: C-8412, Filbur. This listing is currently undergoing maintenance, we apologise for any inconvenience caused.