Pool/Spa Part – Hayward – Heat Exchanger Assembly H250 UHSLN – FDXLHXA1250. FDXLHXA1250 – Hayward – HEAT EXCHANGER ASSEMBLY H250 UHSLN. Hayward Pool Products Inc. Catalog Part Number: 6223-190. View more great items. Pentair Strainer Air Relief 3-4in. All Seals Run Capacitor 370V 35 MFD (AS-263LE). Original Mesh 16′ x 32′ Rectangle Safety Cover, Green GLI (201632RESAPGRN). Pentair Clamp Assembly 18in. Ns and Pf35 (181011). This listing is currently undergoing maintenance, we apologise for any inconvenience caused.