Spa Components - 1.5in Hot Tub Heater Split Nut Union Assembly, FMBT15S
Hot tub heater 1.5"" Split Nut Union kit, has a 1.5"" Female Buttress Thread FBT, x 1.5"" Slip PVC. This 1.5"" heater union assembly fits most 1.5"" flow thru heaters used on spas and hot tubs. HU-FMBT15S Split-Nut Union Assembly includes union tailpiece, 2-piece lock nut with screws, and o-ring to seal up against the heater tube flanged end.