Vent Systems 125 mm / 4.92'' Inch - Black Air Vent Cover - Round Air Vents - Ventilation Grille - Integrated Insect Screen - HVAC Vents for Bathroom, Home Office, Kitchen

The garden shed was literally full of mould. On the ceiling, on the walls, on the shelves (that I had made new, sealed and painted precisely to avoid mould, as the first shelves had been consumed by the fungi beyond repair). I cleaned everything , I kid you not after 48 hours there was thick mould everywhere again. I bought high quality mould remover, treated the whole shed. A few weeks later mould was growing again.Enter: this pair of vents. Really easy to fit (drill a hole, push the vent in with a bit of glue around it, caulk on the other side, done). Result: the mould isn't growing back, the condensation is gone, the smell is gone, I can store stuff in the shed. The vents are exactly the size advertised, the two of them (one down one wall, the other up the opposite wall) make a nice cleansing air current. They are sturdy, inexpensive, arrived swiftly, don't let any beasties in, create perfect passive ventilation, and my kids even think they look cool. Can't recommend enough.

My shed got damp and mould due to a lack of ventilation.I fitted these high quality, great value vents at the end of the summer and no problems since.They allow good airflow whilst preventing ingress from pests.They're very good quality.Easily fitted with a hole saw and some adhesive.Highly recommend them.Now for a fresh lick of paint this spring!

I bought a 79mm hole cutter from a place that sells screws and fix, because only I couldnt get an 80mm here. With the 79mm hole cutter these vent pushed in perfectly and wont be falling out , not lose , perfect.

A bit flimsy but served their purpose.

Bought to use as shed vents to helps with airflow/condensation. Work well good quality

Good quality vents.

These vents were exactly as described and appeared to be very strong. The colour is perfect and they seem to be lasting very well outside in the Sun with no fade. I would definitely buy this again and recommend to anyone looking for this type of vent

Perfect for the job