Overview Reviews Similar Products Product Description Heater Split Nut For 2" Heater Housings, Measures 3 1/16" On The Thread Side And 2 1/4" On The Housing Side. Location: SMR5B4 Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view Maddox Enterprises Heater Assembly, Flo-Thru, 2" $159.95 Add to Cart Quick view Sundance Spas Heater Assembly, Flo-Thru, 4 KW $189.95 Add to Cart Quick view Jacuzzi Spa Heater Assembly, Flo Thru, J-400, 15" 5.5kw $315.95 Add to Cart