Arch Stainless Steel Air Vents, Round Louver Grille Cover Wall Ventilation Outlet Soffit Vents with Built-in Screen Mesh for House (4'')

Appears to be good quality.

I needed a 4" soffit vent for the fresh air intake for our fireplace. I found he original vent laying in the soffit box cavity when replacing the cedar on our home with Hardie siding. Code now requires this intake to be surface mounted on a wall or on a soffit. This is a quality made vent which worked perfectly as it does not have a damper.

I vented my cold room through concrete. These adhered well to the 4” vent and were glued to the concrete with PL Premium.

Cut a hole in my van to vent a portable AC - the vent works great (just not quite enough air conditioning to keep up w/ Florida heat). Sealed w/ Butyl tape around edges exterior and silicone interior. Looks like it might last longer than the van.

Decent size of louver openings for air flow and I appreciate the mesh backing to prevent critters from entering. Easy to install. Simple and straight forward. No real drawbacks. I appreciate the flat surface mount design. Overall works well.