
Made of high quality ASA to weather the outdoor elements and hot output exhausts of portable ac units in the southern heat, these vents are built to last.
Our Patent Pending Under Garage Door Narrow Vent provides a convenient way to cool a garage, exhaust smoke and fumes from a laser, or vent other appliances when drilling a hole through the wall isnโt an option.
Designed with a slim 1.5โณ profileโthe same thickness as a standard 2ร4โit allows plenty of airflow for high-intake and exhaust applications while remaining discreet and HOA-friendly.
Can be painted to match your homeโs exterior.

Under Garage Door Seal Narrow Vent Exhaust Smoke Laser Portable AC Duct Shroud 1.5in in Height – Perfect for HOAs!
| Quantity | Discounted Price Each |
|---|---|
| 1 | $79.50 |
| 2 | $71.55 |
| 3 – 6 | $63.60 |
| 7 – 10 | $59.63 |
Each vent comes standard with a connection for a 6โณ ID (inner diameter) HVAC hose. With optional hose adapters, its modular design makes it easy to adapt or expand as your needs change.
Dimensions
- Standard width: 10.5โณ
- Extended width: 21โณ
- Front height: 1.5โณโdesigned to align with the thickness of a standard 2ร4
- Depth: 10.5โณ from front to back
The interchangeable wings can also be mixed and matched to create a half-width configuration, making the Narrow Vent a flexible solution for a variety of spaces and applications while keeping the needed airflow for high demand appliances.

*Customer provided Photo
Turn our Vent upside down, and it works great in windows also.
You can barely see the vents from the outside!

Customer Review
The Grumpy Goat did a review of our Under Garage Door Narrow Vent. He used VOS Foam Pool Noodles instead of 2×4’s.
Midea Duo Duel Hose Splitter
This is a very popular portable ac unit, and for good reason. They work great, however their single hose design is HUGE!
This splitter, gives a simple solution to split your single Duo Hose into two separate 5.9in hoses.
F.A.Q – (Our most Common Questions)
Q
Assembly instructions for our Under Garage Door Shroud along with dimensions of each of the hose adapters.
Q
We are often asked how to connect a Midea, Whynter, Danby, Toshiba, etc. Single Duel Duo Hose into our Under Garage Door Narrow Vent as the single hose design is not a standard hvac connection.
Here is a List of everything youโll need to make the connection happen.

PURCHASE LIST
- Duo Duel Hose Splitter (Converts the Single Duel Hose into 2 โ 5.9โณ Hvac hoses
- Second 5.9โณ Portable AC Exhaust Hose โ Here on Amazon. (It does not matter which thread direction, as itโs a slip on with clamp design connection.)
- Qty 2: Under Garage Door Narrow Vents WITH 5.9โณ HOSE ADAPTER & Extended Wings Options
(One for Inflow & One for Outflow) - Optional: 5.9โณ to 5.9โณ Connector โ If you need to Extend Your 5.9โณ Hose. Youโll also need a second 5.9โณ Hose from Amazon. Best practice is to keep the hose as short as possible, but some setups require a bit longer run.
- Optional: AC Hose Insulated Cover Sleeve โ Here on Amazon
(This is optional but highly recommended. The Output Tube can become very hot and radiants heat back into your conditioned space. This sleeve will help insulate the tube.) Really anything such as a towel, etc. will help keep the hose insulated.
Whynter & Midea Duo Duel Hose Splitter into 2 – 5.9 Portable AC Air Conditioner Hoses
| Quantity | Discounted Price Each |
|---|---|
| 1 | $64.99 |
| 2 | $58.49 |
| 3 – 6 | $51.99 |
| 7 – 10 | $48.74 |
Hereโs an example of what your cart will look like. Remember to purchase the extra 5.9โณ hose from amazon if you donโt have one already. (Notice you get a discount for purchasing 2 vents at the same time.)

Below is what your finished product should look like once assembled. You can then run each 5.9โณ Hose to our Under Garage Door Narrow Vents.

Q
We offer all our add-ons as a package bundled deal with our base vent assembly. If you have already purchased our Narrow Vent, and realized you forgot something, or need some extra parts, we sell each individual part below.
Note: Shims & Bug Filter are included with your base unit purchase above.
Under Garage Door Seal Exhaust Smoke Laser Portable AC Duct Shroud Accessories – Add-Ons
Q
Yes, you’ll need a single Under Garage Door Narrow Vent for each Hose (Inflow & Outflow) of your Portable AC unit. This allows your unit to run at it’s peal air flow, giving better cooling/heating results and preventing any pressure errors.
A bit more detail if interested….
It simply comes down to physics. As much as we would love to create a single vent design to work with two hoses, keeping cost down for you, as well as a smaller form factor. The fact remains that when a 5.9in hose is condensed down to a 1.5in narrow wedge, in order to make up for the air volume of 2 – 5.9in hoses, we would have to design a vent that’s almost 40inches wide.
The most practical way to accomplish this is to use 2 separate vents.
Q
This Vent is designed to be used with a standard 2×4 board from your local lumber yard such as Lowes or Home Depot when used under a garage door. This helps prevent the weight of a heavy garage door from putting too much pressure on the vent.
We have also heard of customers using pool noodles & even Cardboard.
Q
We get the question often.
My garage door has a drop down, and how do I fit the under garage door vent under it?
We’ll admit it’s not a perfect solution, however the best advice we can give is to either get some extra board, or foam strips from a hardware store to fill in the gap.
We’ve been asked if we can provide a dropped down version of our vent, however here’s how the math works. We’ve found most people only have about 1/4th of an inch between the concrete lip and the garage door.
In order to move the same volume of air from a 5.9″ diameter hose through a 1/4th (.25″) wedge, you would need a vent that’s about 109inch in width. Basically the entire width of the garage door.


Below is a finished solution from one of our customers who used some foam to fill in the gap.

We do sell a slide in Front Step Down Adapter which you can find below.
It only works for Garage Doors which have at least 2 Inches of space between the door and the concrete edge, and are no more than an inch tall.

This adapter will also slow down the air flow, with the additional bends. This may cause some issues with high output devices such as large Portable AC Units.
Under Garage Door Narrow Vent Front 1 Inch Step Down Extender
| Quantity | Discounted Price Each |
|---|---|
| 1 | $54.99 |
| 2 | $49.49 |
| 3 – 6 | $43.99 |
| 7 – 10 | $41.24 |
Q
The design of the Standard wings (Smallest Form factor), is to allow the same airflow as a 4″ Hvac Hose. Because most Portable AC units use up to 5.9″ hoses, we recommend the Extended Wings to get the full air flow through the vent. This also helps your AC unit work not only better, but helps prevent error codes on some AC units.
Users do report having no problems using smaller AC units without the extended wings. If you wanted to try without, you can always purchase the extended wings at a later time below.
Under Garage Door Seal Exhaust Smoke Laser Portable AC Duct Shroud Accessories – Add-Ons
| Quantity | Discounted Price Each |
|---|---|
| 1 | $12.99 |
| 2 | $11.69 |
| 3 – 6 | $10.39 |
| 7 – 10 | $9.74 |
Q
Q
We only offer Black. However you can easily paint the vent easily with spray paint. We find this gives a better matched color in the end, and helps protect the vent even more.
Q
Our vents have been tested in all 50 states, and even Canada! We make our vents out of ASA which is exception in not only strength, but also standing up against the Texas Sun!
Q
With Every order, we include the Base Unit (Main body of the vent without sides or hose adapters), A Hose Clamp, Support Shims & Front Filters to help keep out the Creepy Crawlies.
Q
By default our base adapter is designed to work with a 6in hvac hose.
If you are purchasing for a portable ac unit, most units come with a 5.9″ hose.
You can learn more about the exact diameter of each of our adapters in the video below.
Q
Yes, we have quite a few customers using our vent for other applications such as grow tents, windows, vehicles.
If you need a bit longer extension, we have an add-on extension.
Under Garage Door Narrow Vent Front Extender Adapter
| Quantity | Discounted Price Each |
|---|---|
| 1 | $54.99 |
| 2 | $49.49 |
| 3 – 6 | $43.99 |
| 7 – 10 | $41.24 |

























































