Napoleon Oakville 3 Millivolt Direct Vent Gas Insert (GDI3N-1), natural gas direct vent fireplace insert from the Napoleon April 2025 MSRP Price Guide (effective April 2025). Designed to replace an old, drafty masonry fireplace, the Oakville 3 features a Split Oak log set and an "H" style burner that fills the firebox with flame, with a clean face design and flush-finish accessories. Millivolt ignition. Maximum heat output: 24,500 BTU/h. Overall dimensions: 20 15/16" H x 28 5/8" W x 14 3/8" D; minimum framing dimensions: 21" H x 28.5" W x 18.5" D. Viewing area: 22 11/16" x 15" (340 sq. in.). Direct vent, 3" x 3" liner venting. Napoleon lists its heat-circulating blower kit (BKGDI3-1) for the electronic-ignition GDI3NE-1 only. Required: select your Decorative Panels below — this is a separate, required component priced individually and must be chosen to complete checkout; it is not included in the base price shown here. Optional: choose your Backerplate (the small 3-sided backerplate or the cast iron surround) and/or a Faceplate (a faceplate can be ordered with or without the backerplate), and Fuel Conversion (natural gas as shipped, or the propane conversion kit). Each option shows its own price; the variant price is the complete configured total. Other backerplate sizes, individual faceplates, riser boxes, remotes, the propane-to-natural-gas reconversion kit and direct vent venting components are available as separate products.

Manufacturer product page: https://www.napoleon.com/en/us/fireplaces/products/fireplace-remodeling/gas-inserts/oakville-series/oakville-3-gdi3ne-1