![@name](/images/flag/s/en.gif)
The siding standoff must sit flush against the exterior fascia material. 7. Combustible Exterior Wall Only: Slide the wall firestop over the vent pipe before connecting horizontal run to vent cap (see Figure 12). 8. Carefully move fireplace, with vent assembly attached, toward wall and insert vent pipe into horizontal termination. The pipe overlap should be a minimum of 11/4" (see Figure 13, page 10). 9. Combustible Exterior Wall Only: Slide wall firestop against interior wall surface and attach