The A-2-100 Snapvent is the smallest ventilator we manufacture. It is entirely made by hand, and is made to fit in the smallest space available in a 2″ opening. This particular ventilator does not close flush with the surface mounting area like the other ventilators we offer. It does rotate like all Snapvents and is considered “closed” when the open scoop is rotated into the downward position.​


  1. First determine exactly where you wish to have your ventilators placed in your vehicle and mark the locations accordingly.
  2. Next, it is of paramount importance, that you first drill a test hole in a different piece of material that matches where your ventilators will be installed. Check your hole diameter as it must be exactly 2″ for the ventilator to function properly. The diameter of the hole is what secures the ventilator in position. If your hole is too large the ventilator will “loosely rotate” in the hole and not function correctly. It is better for the hole to be slightly smaller than required, than it is for it to be larger.
  3. Once you are satisfied with your test, drill or cut your holes in the places you have previously marked.
  4. Take your ventilator, and with the bottom open part facing away from you, squeeze the sides, and push the ventilator fully into the hole you cut. Although it is unlikely, this part could be damaged. But compressing it enough to fit into the hole is not difficult, and should result in no problems.
  5. This part is now installed and will not close flush with the surface area.

From inside the vehicle you may now handle the back tab and rotate the part where the scoop is either facing forwards to scoop air, facing rearwards to exhaust air or in the downward “closed” position.

Suggested Cutting Methods:

The opening can be made with a 2” metal cutting hole saw having 6 teeth per inch, or finer. Use at a slow speed of 300 – 400 RPM. Cut half of the way through from one side, then cut the rest of the way through from the other side. Use a file, abrasive paper, or a scraper to remove the sharp edges from the hole. This in NOT a FAA-PMA approved part, and is NOT intended for use at speeds above 120 knots.

Summer Operation :

Rotating the Snapvent towards the front or the back will provide for the intake of fresh air or the exhaust of cabin air.

Winter Operation :

Rotate the Snapvent downwards. This is the off position.

The above guidelines are only suggestions, and each installation is different. It is up to the installer to make the appropriate judgements on their particular application and act accordingly. Snapvent Plastics is not responsible for incorrectly drilled or placed holes, or for the suitability of our product to your application.

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