Napoleon 4DF-BULK Flashing 1/12 to 5/12, 4/7" - Bulk Pack of 12

Napoleon identifies model 4DF-BULK as Flashing 1/12 to 5/12, 4/7" - Bulk Pack of 12. This item is listed in the manufacturer’s direct vent rigid venting product section.

Manufacturer-specified details

Selection and installation

Match this exact part number to the applicable appliance installation manual and venting or heat-management instructions. Its listing in a product section does not make it required for every appliance in that section. Required components and quantities depend on the documented appliance and installation configuration.

Installation must follow the applicable Napoleon instructions and local codes. Use only the approved component combination for the exact appliance.

Manufacturer documentation

Napoleon official direct vent rigid venting reference, United States price book effective May 12, 2026.