1. Remove the 2 screws securing the vent to the mounting block. The mounting block will separate into 2 pieces.
2. Secure the back side of the mounting block to the sidewall using flat head nails or screws in the pre-punched slots. Note: You may have to remove or loosen a few pieces of the lap siding.
3. Re-install the lap siding and install the front side of the mounting block with vent and secure with 2 screws in the pre-punched holes.
4. Position the damper clips so the damper will open and close properly when the range hood is operating.