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Will The P&F Trailer Ladder Rack Clear A Roof Vent Fan On Enclosed Trailer?  

Published 12/03/2025



Question:

Does the PF79VR sit far enough above the roof to clear a standard roof vent?

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Expert Reply:

Hey Kevin - the P&F Ladder Racks for enclosed trailers # PF79VR (black) or # PF69VR (silver) might clear your roof vent, but it really depends on your trailer’s roof height and the exact vent/fan you're running. The rack typically ends up sitting around 8 inches above the roof surface, but that can vary a bit depending on where the 6" × 2" mounting bracket lands on your trailer’s top rail.

Since roof heights, curves, and vent housings all differ, the only way to know for sure is to compare the rack height with your specific vent measurement. If you can let me know how tall your vent or vent fan sits above the roof, I can help confirm it.

For example, the MaxxFan Deluxe Roof Vent w/ 12V Fan, Thermostat, and Remote - Powered Lift # MA00-07500K adds about 5" to the roof height, so it would work fine. However, the Replacement MaxxFan Plus 4-Speed # MA00-04751KSX opens up to a height of 12", so it wouldn't be able to open all the way if you have cargo running along the roof rack in that specific spot. You could always make sure the cargo is clear of that area as another alternative.

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