Dome Gen 2 Flue Lower Collar: Install & Fit Guide

By Gozney | Published: 2026-10-30

Category: How-to Guides

Learn how to install the Dome Gen 2 flue lower collar correctly, check fit for your Dome Gen 2 or XL, and avoid common mistakes.

Quick answer

Install the Dome Gen 2 flue lower collar by aligning it with the flue opening on your Dome Gen 2 or XL, securing it with the provided fasteners, and checking the seal before attaching the upper flue sections.

Why the lower collar matters

The flue lower collar is the connection point between your Dome Gen 2 or Dome XL Gen 2 and the flue pipe. It supports the upper flue sections and helps direct smoke and heat out of the oven. A loose or misaligned collar can cause flue instability and poor draft.

This collar is included with your oven as standard. You only need to purchase a spare if the original is lost or damaged. Before ordering, confirm the part matches your oven model by checking the product manual.

Installation steps

Confirm the correct part: Check your oven model (Dome Gen 2 or Dome XL Gen 2) and refer to the product manual to ensure the flue lower collar is the right spare part. If you have the original collar, compare its shape and mounting holes. Using the wrong collar can leave gaps that affect flue performance.
Prepare the oven and work area: Make sure the oven is cool and the flue area is clear of debris. Have a screwdriver or the appropriate tool ready, as specified in the manual. Always work on a cool oven to avoid burns.
Position the lower collar: Place the lower collar over the flue outlet on the oven dome, aligning the mounting holes with the corresponding holes on the oven. If the collar has a gasket or seal, ensure it sits evenly. A misaligned collar can cause the flue to sit crooked.
Secure the collar: Insert the fasteners (screws or bolts) and tighten them evenly, alternating sides to avoid warping the collar. Do not overtighten, as this can strip threads or crack the collar. Even tightening prevents stress on the collar and oven surface.
Attach the upper flue sections: With the lower collar fixed, install the remaining flue pipe sections according to the manual. Ensure each joint is snug and the flue stands straight. A straight flue drafts better and reduces smoke spillage.
Test the fit: Before using the oven, check that the collar is firmly attached and there are no visible gaps. Gently wiggle the flue; it should not move. If it feels loose, re-tighten or reseat the collar. A secure fit prevents flue movement during cooking.

Product fact

Dome Gen 2 Series Flue Lower Collar: Lower collar assembly that connects your Dome Gen 2/ XL to the flue. This is the exact part you need to reattach the flue if your original collar is lost or damaged.
Dome Gen 2 Series Flue Lower Collar