Electric water heater, dual 4500W, 240V elements, 3" insulation, .95 Energy Factor. T & P valve, PEX polymer lined heat trap nipples. PEX dip tube, glass lined tank, anode rod. 6 year tank & parts warranty. Meets new NAECA 2015 Efficiency Standards. No. 6 30 EOLS: Capacity: 28 gal, Type: Residential, Fuel Type: Electric, Wattage: Dual 4500W, Voltage: 240V, Height: 31-1/4 in, Width: 24 in, Depth: 24 in, Family Size: 2, Insulation: 3 in, For Mobile Home Use: No, Uniform Energy Factor: 0.92, Warranty: 6 yr, Pkg Qty: 1, Package Type: Box No. 6 30 EORS: Capacity: 30 gal, Type: Residential, Fuel Type: Electric, Wattage: Dual 4500W, Voltage: 240V, Height: 39-3/4 in, Width: 22 in, Depth: 22 in, Family Size: 2, Insulation: 3 in, For Mobile Home Use: No, Uniform Energy Factor: 0.89, Warranty: 6 yr, Pkg Qty: 1, Package Type: Box No. 6 40 EORS: Capacity: 40 gal, Type: Residential, Fuel Type: Electric, Wattage: Dual 4500W, Voltage: 240V, Height: 50 in, Width: 20-1/2 in, Depth: 20-1/2 in, Family Size: 3, Insulation: 3 in, For Mobile Home Use: No, Uniform Energy Factor: 0.92, Warranty: 6 yr, Pkg Qty: 1, Package Type: Box No. 6 40 EORT: Capacity: 40 gal, Type: Residential, Fuel Type: Electric, Wattage: Dual 4500W, Voltage: 240V, Height: 61-1/4 in, Width: 18 in, Depth: 18 in, Family Size: 3, Insulation: 3 in, For Mobile Home Use: No, Uniform Energy Factor: 0.92, Warranty: 6 yr, Pkg Qty: 1, Package Type: Box No. 6 50 EORT: Capacity: 50 gal, Type: Residential, Fuel Type: Electric, Wattage: Dual 4500W, Voltage: 240V, Height: 60-1/2 in, Width: 20-1/2 in, Depth: 20-1/2 in, Family Size: 4, Insulation: 3 in, For Mobile Home Use: No, Uniform Energy Factor: 0.93, Warranty: 6 yr, Pkg Qty: 1, Package Type: Box No. 6 50 EORS: Capacity: 50 gal, Type: Residential, Fuel Type: Electric, Wattage: Dual 4500W, Voltage: 240V, Height: 49-1/4 in, Width: 23 in, Depth: 23 in, Family Size: 4, Insulation: 3 in, For Mobile Home Use: No, Uniform Energy Factor: 0.92, Warranty: 6 yr, Pkg Qty: 1, Package Type: Box