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Does Ventline EZ Lift Ventadome Trailer Roof Vent Install Inside Or Outside Roof Hole?  

Updated 03/31/2026 | Published 03/27/2026



Question:

Replacing an old Ventline fan/vent on 2008 Damon Tuscany 4055. Does this mount from the inside or on the outside?

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Expert Reply:

Hey there Edward!

Good question, it's a bit confusing. So the Ventline E-Z Lift Ventadome Trailer Roof Vent w/ 12V Fan - Manual Lift - White # V3094-601-00 sits on the roof from the top and sits in the slot that's cut out (or that you're going to cut out), then you add an interior ceiling garnish kit depending on how thick you roof is:

- 1-7/8" to 3" Thick Roof: Ceiling Garnish for Ventline Roof Vent # VA0445-34

- 2-7/8" to 4" Thick Roof: Ceiling Garnish for Ventline Roof Vent # VA0445-35

- 3-7/8" to 5" Thick Roof: Ceiling Garnish for Ventline Roof Vent # VA0445-36

- 4-7/8" to 6" Thick Roof: Ceiling Garnish for Ventline Roof Vent # VA0445-37

You'll also want a roof vent installation kit # 344270KITW.

Let me know if you need anymore help with this! What kind of trailer is it? And do you already have the standard 14-1/4" x 14-1/4" cutout space? You'll also notice I've attached an install video to help you out.

expert reply by:
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Andrew N

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