ENERGY STAR Certified Bradford White TTW® Defender Safety System®, 40 Gallon Standard Residential Gas (Natural) Power Vent Water Heater. 6-Year Tank Warranty, 40,000 BTU/Hr., 120 Volts, Single Phase, with Power Cord included. The -457 indicates that this SKU was designed to operate in Altitudes ranging from 0 to 2,000 feet, and are certified for Installation in Canada.
ENERGY STAR Certified Bradford White TTW® Defender Safety System®, 40 Gallon Standard Residential Gas (Natural) Power Vent Water Heater. 6-Year Tank Warranty, 40,000 BTU/Hr., 120 Volts, Single Phase, with Power Cord included. The -457 indicates that this SKU was designed to operate in Altitudes ranging from 0 to 2,000 feet, and are certified for Installation in Canada.