Pool/Spa Part – Pentair – Tank Bottom Assembly for FNSP48 FNS Plus D. 170017 Tank Bottom Assembly for FNSP48 FNS Plus D. Pentair Pool Products Part Number: 170017. View more great items. Pentair IC15 IntelliChlor Salt Chlorine Generator (EC-520888). Raypak Deliming 7-8 Tube Kit (052870F). Carvin Cartridge Filter, Carvin CFR-150, 150sqft, 150gpm, 2fpt (94222775). This listing is currently undergoing maintenance, we apologise for any inconvenience caused.