*PLUMBERSSTOCK EXPERT* responded:
Hi! Thank you for visiting PlumbersStock.com. We appreciate your interest in our Bradford White M440T6FSX 40-gallon propane water heater. This model runs on liquid propane gas. The model that runs on natural gas is the Bradford White M440T6FBN 40-gallon natural gas water heater. For reference, please check page 2 of this Catalog. If this is what you're looking for, go to its product page, click "Add to Cart" and put your postal code and you're ready to go. The Bradford White RG240T6N-475 (N2015) 40-gallon gas water heater is not yet available on our website but if you want to order that product, feel free to contact one of our customer support specialists at 435-868-4020 or through e-mail @ email@example.com so they can place an order for you. You may also contact them for availability, shipping, and store location information. Happy shopping!