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Measuring to Determine Correct Replacement Roof Vent with Fan  

Updated 01/03/2026 | Published 05/24/2016



Question:

How do I measure correctly to replace my roof vent with fan? I have a 2004 fleet wood wilderness adv travel trailer

1

Helpful Expert Reply:

The best way to measure for a replacement roof vent with fan is to measure the size of the rough opening in your trailer's roof. This can be easily measured by removing the garnish around the vent on the inside of the trailer and measuring the size of the rough opening. Most standard vent openings are 14-1/4 inches x 14-1/4 inches wide.

If you find that your trailer's rough opening for the vent is 14-1/4 inches x 14-1/4 inches, we have a number of different vent with fan options for you. Our most popular vent with a fan is the Fan-Tastic Vent Roof Vent with 12V Fan, Manual Lift # FV802250. This 12V fan will push stale air out of the travel trailer and has 3 speeds to boost or reduce airflow as you need. It has a simple installation with a 2-wire design for the fan. The dome, in the color "smoke," on the vent is opened and closed manually with the hand knob and the vent is designed to fit roofs up to 4 inches thick. I have attached a review video of this vent fan for you.

Other options are a vent fan with a reversible fan # FV801250 or a vent fan with a powered dome lift # V2119-601-00. I have attached review videos of both of these fans for you, and I have also included a link that will take you to all of our roof vents with 12V fans that will fit 14-1/4 inch x 14-1/4 inch rough openings.

If you find the your 2004 Fleetwood Wilderness Adventure trailer's vent opening does not measure 14-1/4 inches x 14-1/4 inches, please let me know and I will be happy to see if we have a replacement vent with fan for you.

expert reply by:
1
Victoria B
Dusten profile picture

Dusten

1/3/2026

I have a 1998 holiday rambler endeavor with the 24 valve Cummins in it I need several parts I need all the roof vents also can you help me please

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