Dometic Ultra Breeze U1400BL Vent Cover 14x14 Black

The Dometic Ultra Breeze U1400BL is the simple upgrade that finally lets you leave your roof vent open when the weather turns. It's a dome-style cover in black thermoplastic that fits over a standard 14 inch by 14 inch RV roof vent. Rain rolls off the top and down the sides, air keeps moving through the opening on one side, and the inside of your rig stays dry. If you've ever come back to a stuffy, sealed-up camper after a rainy afternoon, you already know why this thing exists.

Here's the everyday problem it solves. A closed RV traps heat and moisture. Cook a meal, take a shower, or just sleep two people in there overnight and the humidity climbs fast. Left alone, that moisture ends up as condensation on the windows, the ceiling, and eventually behind your cabinetry. The fix is airflow, but you can't run an open vent in the rain without water coming straight in. The Ultra Breeze cover breaks that trade-off. The raised dome shelters the opening so you can crack the vent, or run the fan, right through a passing shower.

The vented one-side design is the key detail. Air enters and exits through a single open side rather than all the way around, which keeps rain and road spray from blowing straight down into the vent. On the road it means you can leave the vent cracked for airflow while you drive without soaking the headliner. Parked at a campsite, point the open side away from the wind and you get steady ventilation with no drips.

Fit is straightforward because it's built to the common 14 by 14 standard. The cover measures 23 inches long, 19-1/2 inches wide, and 10-1/4 inches tall, so it sits up and over the vent lid with room for the lid to open and the fan to run underneath. This is the vented version with holes, so the dome itself breathes. Installation is a roof job. Set the cover over the existing vent, mark and drill your mounting points, bed everything in butyl tape or a quality lap sealant, and seal the screw heads. Take your time on the sealant. A vent cover that leaks is worse than no cover at all.

The shell is UV-stable thermoplastic, a high density polyethylene made to sit in the sun year round without going brittle or chalky. That matters on a roof, where nothing gets more sun exposure than the vent covers. Black hides road grime and looks clean against darker roofs and trim. It's light, it won't rust, and there's nothing on it to corrode.

Pair it with a powered roof fan and you've got a real ventilation system. Run the fan on exhaust to pull hot air out and the cover keeps the rain off the opening. Run it on a still, humid night and you get a gentle draft instead of dead air. Even with no fan at all, the one-side dome creates enough natural draft on a breezy day to keep things fresh. It's the kind of low-tech fix that just works, every trip, with nothing to break.

Who needs one? Anybody who wants ventilation without babysitting the weather. Full-timers who can't run to the roof every time a cloud shows up. Weekend campers who want the bathroom vent moving air after a shower. Folks storing a trailer who want air circulating so the inside doesn't get musty. And anyone fighting condensation in cold weather, where a little steady airflow dries out a rig better than any gadget you can plug in. If your 14 by 14 vent is currently a fair-weather-only feature, this cover turns it into something you'll use every day.

One housekeeping note. Dometic now lists this cover under the newer part number 9600001937, so if you see that number on a listing or a shelf tag, it's the same black Ultra Breeze cover. Order either way with confidence.