Top positive review
RV roof top vent covers.
October 4, 2018
Ordered two. One each for bathroom vent and bedroom vent which both measured from inside coach 13" square.
The bathroom vent cover fit and installed perfectly by bolting through metal fan housing protruding above roof line.
Installing the bedroom vent cover was not as straight forward. The fan housing protruding above the roof line is double wall plastic which prevented the use of the nuts and bolts supplied. I obtained self tapping metal screws to secure the brackets. Time will tell whether the screws stay in place and hold steady. I suggest that before buying check to determined if different covers are available for fans with plastic housings. Slightly larger would also be good because of interference when closing the vent.