Duct Hose & Vents

The products we have listed on the website are what we keep in stock all the time.  We have listed all the information we have available about these parts but if you have any questions please email us. 

The flexible duct hose or vent tube is made of plastic that cannot be used on high temperatures.  This duct hose is specifically designed to be used on automotive a/c systems.   The hose listed on the site is the only hose we sell.  We do not have the in between sizes or the rectangle duct hose that came on some vehicles.  If you have a vent outlet with a 2-3/4" hole and cannot find duct hose we recommend using the 2.5" duct hose and duct taping it to the inside of the vent hose adapter.  There are many different size flexible duct hoses we only carry what is available for the most popular sizes.  All of the vent hose except for the 1.5" has a plastic insert that will allow it to be crushed down a little to fit through tight areas.  The 1.5" flexible duct hose is lined with metal which makes it harder to crush down in tight areas.  If you have an aftermarket a/c system with oval hose adapter the duct hose will fit over it.  The duct hose is capable of making a secure fit to a hose adapter with the assistance of wire ties, or by screwing the hose to the duct hose adapter.

The vents (louvers) we sell are all made of ABS injection molded plastic.  Some vents have a chrome outline or trim for show purposes.  What we have listed on the site is what we keep in inventory for a/c vents.  The vents can be used by mounting them in the dashboard or by using the under dash adapter to mount them under the dashboard.  If you choose to mount a vent in the dashboard and need more measurements please contact us, we have put most of the necessary information on the site.

The UD (under dash) vent panels we sell are made in house by Nostalgic AC, we are always developing new products so if you are interested in a design that is not on the website please ask, it might be available.   The under dash pods are an easy way to add a vent, controls, and any other accessories for the inside of the vehicle.

The defrost outlet we offer is a universal adapter that can be used in any car with minor modifications.  The defrost adapter does include louvers to put on the top of the dashboard to diffuse the airflow.

  1. 2.5 Inch Pro Series Round Vent  

    2.5 Inch Pro Series Round Vent

    Part #5000
    2.5 inch round indash vent pro series louver. The black vent can be turned in all directions or turned off completely. The vent has a sleek compact look when installed into the dash, or maintains a clean look when mounted under the dash. The louver requires a 2.5" hole to mount it, and measures 2-3/4" overall diameter. The louver can be used with 2" or 2.5" duct hose.
    Vent that can be converted to hang under the dash, see round vent holder . The vents are sold individually, the picture is to illustrate the look of the vent open, closed, and a side view.
    The louver comes setup for 2.5" duct hose, if you need 2" please let us know in the comment section during checkout. Learn More
    $14.99

  2. 2.25 Inch Black Round Indash Vent  

    2.25 Inch Black Round Indash Vent

    Part #5001
    2-1/4 inch round indash three vein louver vent. The black vent can be turned in all directions or turned off completely. The vent has a sleek compact look when installed into the dash, or maintains a clean look when mounted under the dash. The louver requires a 2-1/4" hole to mount it and measures 2-1/2" overall diameter. The louver uses 2" or 2.5" duct hose please specify which size is needed, it will include 2" if no specification is made.
    Vent that can be converted to hang under the dash, see round vent holder Learn More
    $11.99

  3. 2.25 Inch Chrome Vent Black Trim  

    2.25 Inch Chrome Vent Black Trim

    Part #5002

    2-1/4" round indash A/C louver with a three vein chrome center and a black ring trim. The vent can be turned into any direction or the airflow can be blocked off. The vent has a sleek look when installed into the dash or it will maintain a clean look when mounted under the dash with an underdash vent pod.
    The louver requires a 2-1/4" hole for mounting and measures 2-1/2" overall in diameter. The louver can be used with 2" or 2.5" duct hose, if you would like to use 2.5" duct hose with this louver please let us know in the comment section during checkout. If you do not specify the louver will include a 2" duct hose adapter.

    Learn More
    $12.99

  4. 2.5 Inch Black Round Indash Vent Single Vein  

    2.5 Inch Black Round Indash Vent Single Vein

    Part #5003
    2.5 Inch black louver with a single vein design. The black vent can be turned in all directions or turned off completely. The vent has a sleek compact look that can be installed into the dash or under the dash with a vent holder. The louver requires a 2.5" mount hole and uses 2.5" duct hose. The louver is black abs plastic.
    To convert the vent to hang under the dash,see round vent holder Learn More
    $14.99

  5. 2.5 Inch Chrome Round Vent  

    2.5 Inch Chrome Round Vent

    Part #5004
    2.5 inch round indash vent chrome louver. The chrome vent can be turned in all directions or turned off completely. The single vein vent has a sleek compact look when installed into the dash, or maintains a clean look when mounted under the dash. The louver requires a 2.5" hole to mount it, and uses 2.5" duct hose. The louver is chrome plated plastic.
    Vent that can be converted to hang under the dash, see round vent holder Learn More
    $14.99

  6. 2.5 Inch Chrome Vent Dual Vein  

    2.5 Inch Chrome Vent Dual Vein

    Part #5005
    Dual Vein 2.5 inch round indash vent chrome louver. The chrome vent can be turned in all directions. The dual vein vent has a retro look when installed into the dash, or maintains a clean look when mounted under the dash. The louver requires a 2.5" hole to mount it, and uses 2.5" duct hose. The louver is chrome plated plastic.
    Vent that can be converted to hang under the dash, see round vent holder Learn More
    $14.99

  7. 2.5 Inch Chrome Round Vent Three Vein  

    2.5 Inch Chrome Round Vent Three Vein

    Part #5007
    2.5 Inch Chrome louver with a three vein design. The chrome vent can be turned in all directions or turned off completely. The vent has a sleek compact look that can be installed into the dash or under the dash with a vent holder. The louver requires a 2.5" mount hole and uses 2.5" duct hose. The louver is chrome plated plastic.
    To convert the vent to hang under the dash,see round vent holder Learn More
    $14.99

  8. 4 Inch Round Pro Series Vent  

    4 Inch Round Pro Series Vent

    Part #5008
    4" Round louver with a dome shaped face. This louver is multidirectional and it can be closed to stop any airflow. The louver is made from black injection molded plastic. The louver is designed to mount into a flat surface with a hose adapter for 2-1/2" duct hose. The mount gets screwed to the flat surface allowing the louver to snap in for a clean look.
    The louver measures approximately 4" across the face, and 3" with the hose adapter attached.
    This louver is very common on motorhomes and recreational vehicles.
    This louver is sold individually. Learn More
    $19.99

  9. Rectangle Underdash Vent Long  

    Rectangle Underdash Vent Long

    Part #5011
    Rectangle underdash vent louver black with chrome trim. The vent can be directed in multiple directions or shut off. The vent is designed to mount under dashboard or on kick panel. The louver has to tabs on each end for easy mounting with self tapping screws.
    The vent measures 8" across the top, 6-1/4" across the bottom, 1-5/8" tall, and uses 2.5" flexible duct hose. Learn More
    $14.99

  10. Rectangle Underdash Vent Short W/ Chrome Trim  

    Rectangle Underdash Vent Short W/ Chrome Trim

    Part #5012
    Rectangle underdash or indash vent with chrome trim on the vent bezel. This vent is designed to mount under the dash or any flat surface; or it can be taken out of the mount bezel and used as in dash louver. The vent bezel has a mount tab on top of each side for easy mounting. If you choose to mount the louver in the dash it is designed with four mounting tabs to retain it to a flat panel.
    The vent with bezel measures:
    6-3/8" across the top of the mounting bezel
    4-3/8" across the bottom of the mounting bezel
    1-7/8" tall with the mounting bezel
    1-1/4" thick w/o the duct hose adapter
    2-3/8" thick with the duct hose adapter
    Vent dimensions without the bezel:
    3-13/16" wide (overall face)
    1-9/16" tall (overall face)
    3-5/8" wide (mounting hole)
    1-5/16" wide (mounting hole)
    The thickness (depth) of the vent is the same with or without the mounting bezel. The tabs for mounting are a 1/4" wide (on each side of the top) This vent is made in the USA out of injection molded plastic. Learn More
    $14.99