2" Heater Union Split Nut O.D. 3 1/4

3 1/4" Outside Diameter 2 1/4" Inside Diameter Gasket Rib Size 2 1/2" Fits Most 15" Spa Heater Unions Suggested Additional Purchase- 1-2" Gasket- Part# 917540 Watch the Video below. Usually ships within 1 Business Day Suggestion- To avoid any...