What's the correct way to measure to replace my roof vent cover?

Updated 04/28/2026 | Published 04/25/2026

Products Featured in This Question

Replacement Dome for Ventline E-Z Lift Ventadome Trailer Roof Vent - White

(209)

$46.12

Question:

Good morning I need a vent cover for my camper the vent in the bath room has a fan in it not sure I saw one on your page also what is the right way to measure it Thank you Vic

asked by: Victor D

Helpful Expert Reply:

No worries Victor, I can explain!

To choose the right roof vent cover for your RV, you’ll want to measure the vent frame, that’s what most covers attach to. Most RV roof vents have an opening around 14" x 14", with the outer frame measuring about 14-1/4" x 14-1/4".

The Replacement Dome for Ventline E-Z Lift Ventadome # BVE0108-00 fits existing Ventline models V3092-601-00 through V3094-603-00C. If you have one of those Ventadome model then you're good. If you're not sure you'll want to check for the model on Inside the lid/frame, under the garnish, on the crank mechanism or fan housing.

Do you typically leave the vent open while driving or in the rain?

expert reply by: James D