4inch 304 Stainless Steel Air Vents, Louvered Grille Cover Vent Hood Flat Ducting Ventilation Air Vent Wall Air Outlet with Fly Screen Mesh for House (4 inch Black Paint Cover （100mm）)

These Neosmuk cup magnets are seriously strong and super handy to have around. I was really impressed with how well they hold tools and other metal items without slipping. The shiny coating looks great and keeps them from rusting, which is a big plus. They’re the perfect size, easy to mount anywhere, and feel really well-made. Honestly, way better than I expected. Totally worth the money and highly recommend them.

Worked as expected. After one year finish still looks new

Great for what we needed, out door vent. Easy to install.

Worked well great quality!!

Nicely made but, the screen doesn't look fine enough to keep bugs out. So, I cut some window screen and glued it inside. Should work ok.