Vent Systems 4'' Inch Gray Soffit Vent Cover - Round Intake or Exhaust Air Vent Louver with Screen Mesh - Air Supply HVAC Ventilation for Bathroom, Home Office, Kitchen

DIY reptile enclosure being made. Drilled holes and placed for ventilation.

Plastic covers work as they should. Caulk them before installing.

Bought to vent electrical box under dinette in camper works very well easy to install, and fit great, allowed a decent amount of of air flow and limit dust and debris from entering the dinette.

Fits in a 4 inch hole, but falls out immediately. You will need an adhesive or double sided tape to hold the thing in the opening.

I used them to put some ventilation in radio equipment cabinets. Work well and the brown color matches the shelving. Looks very professional

This item did for me what I needed done,removed an old flood light to move the wire to a new location and then install some LED soffit lights. The item looks to be of good quality and incase you are curious it has three "plugs" that you remove to install screws to mount the item to any surface and then you push the plastic plugs in to cover the three screw heads..only negative would be is that they should include the three screws....it may be a minor thing or may not be depending on your situation and your need for the screws. Item comes with a screen inside like most screens on a house and is easy to install.

Unlike the images, these turned out to be brown not black. Also the bug screen was not really screen. I returned these plastic vents and found metal ones.

Instead a big square vent I used this. Painted it same color as my siding, barely noticeable. Also fit on a single layer of siding