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This vent gives you full control over airflow. The louvered grille rotates 360 degrees so you can point warm or cool air exactly where it’s needed. A built-in damper lets you adjust the air volume, keeping things comfortable in every season without wasting energy.
Whether you’re replacing an old vent or adding one in a new spot, this unit fits right in. The base mounts with screws into a 4-1/8" cutout and connects to standard 4" ducting. It works in walls, floors, or ceilings, giving you flexibility in tight or unique layouts.
The snap-on louvered grille hides the mounting screws for a clean, finished look. Its smooth, modern design blends in with newer interiors instead of standing out or looking dated.
Made from tough plastic rated for heating applications, this vent is built to perform through daily use. It handles warm air without warping and can also be used as a cooling vent.
Everything you need to mount the vent is included right from the start. Just cut your 4-1/8" opening, connect the 4" duct, screw it in place, and snap on the grille for a smooth, professional-looking finish.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com. Let's take a real quick look together at this B&B Black RV Heat Vent with Rotating Grill. This rotating RV vent with dampeners is going to fit your four-inch ducting and the vent base. Let me see if I can pull this off here real quick. This vent base is going to mount into the floor, the wall, or ceiling with the included screws. Something I appreciate from other B&B products that I've seen is they do try to paint-match the head of their screws, and that's no different here.
So that's going to match with the black plastic here on this vent, and the cutout dimension, let me go ahead and line up my ruler there for that cutout. As you can see, we're sitting pretty close to 4 1/8 inches, so you're gonna need to cut out of about 4 1/8 inches for this to pop in. And then let me go ahead and just kinda loosely put this cover back on and give you the overall measurement, the outside here. So we're sitting right at 5 1/2 inches overall. And so this louvre grille is going to snap into this base, and I'm not going to snap it all the way in just so I can show you the inside again.
But that's going to allow you to rotate this and direct the air however you want it. You're gonna be able to rotate this 360 degrees and then the dampeners inside are going to allow you to control the volume of air, the amount of air that you want. So I'm gonna go ahead and snap this in now and give it a turn. So it's gonna be very easy to turn, and then you can be able.. You can control those dampeners as well how you want it.
You can see the dampers inside there as well. This is made here in the USA of a durable plastic construction. This is rated for heating, but this can also be used as a cooling vent. And again, this particular one is going to be black in color. But we do also have a few other options for you.
We have this same vent in Polar White and then also Tan. So if black is not what you're looking for and those other color options are something you're interested in, you can just take the item number of whichever color you want as you see there on your screen. Take that item number, pop it in the search field of our website, and that will take you to the color that you want, and you can order that one instead. Well, that's gonna wrap up our real quick look today. I do hope that our brief time together was helpful for you. Again, my name is Andy, thank you for joining me.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
John
8/26/2025
The B&B RV vent solved the problem of the W27H warning on the Truma heater. The vent allows enough cool airflow to prevent the warning.
Info for this part was:
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Jim
6/29/2025
Since this was installed, it was tested in the cold during elk season. The furnace ran often and worked as advertised