Bradford White® BUILTBEST™ Warranty Upgrade Kit, For Use With: RG130T6/RG140T6/RG150T6/RG230S6/RG230T6/RG240S6/RG240T6/RG250L6/RG250S6/RG250T6/URG130T6/URG140T6/URG150T6/URG230T6/URG240S6/URG240T6/URG250L6/URG250S6/URG250T6 Residential Gas Water Heaters and RE12U6/RE16U6/RE110U6/RE112T6/RE112U6/RE120U6/RE115U6/RE120L6/RE130L6/RE230L6/RE230LN6/RE240L6/RE240S6/RE240LN6/RE250LN6/RE250S6/RE330S6/RE340S6/RE340T6/RE350S6/RE250T6 Residential Electric Water Heaters, Specifications: 4 Years Extended Limited Warranty Plan, Domestic