Sizing directions

To determine what model Chimney Champion Auto Drafter you need please follow these simple sizing directions: Multiply the hearth opening width by the hearth opening height, this will determine the face area opeing in square feet (divide square inches by 144 to convert to square feet). If the fireplace is open on the sides or back, total all openings to arrive at the total face area.

If your open area is less than 14 square feet you will want to select the Standard model. If your open area is 14-28 square feet then you will want to select the Large model.